TY  - CONF
AU  - Zorko, Benjamin
AU  - Ajtić, Jelena
AU  - Nečemer, Marijan
AU  - Sarvan, Darko
AU  - Rajačić, Milica
AU  - Korun, Matjaž
AU  - Vodenik, Branko
AU  - Krneta Nikolić, Jelena
AU  - Glavič-Cindro, Denis
AU  - Vukanac, Ivana
AU  - Petrovič, Toni
AU  - Ilić, Zorana
AU  - Vidic, alf
AU  - Didović, Irma
AU  - Janušeski, Jovan
AU  - Anuševa, Jordanka
AU  - Dimovska, Snezana
AU  - Danilovski, Dejan
AU  - Anđelić, Tomislav
AU  - Zekić, Ranko
AU  - Svrkota, Nikola
AU  - Radonjić, Slavko
AU  - Petrinec, Branko
PY  - 2023
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/3271
AB  - Mjerenja koncentracije aktivnosti radionuklida Be-7 (berilij-7), Pb-210 (olovo
210) i Cs-137 (cezij-137) u Zemljinoj atmosferi neophodna su za razumijevanje
atmosferskih procesa, kvalitete zraka i radioaktivnosti okoliša. Berilij-7 je
radioaktivni izotop koji prvenstveno nastaje interakcijom kozmičkih zraka s
atomima dušika i kisika u gornjoj atmosferi. Njegov kratki poluživot čini ga
vrijednim tragačem za atmosferske procese u relativno kratkim vremenskim
razdobljima. Olovo-210 je radioaktivni izotop čiji je primarni izvor u atmosferi
raspad plina radona. S dužim poluživotom od Be-7, pogodan je za proučavanje
dugotrajnijih atmosferskih procesa. Cezij-137 je, s druge strane, antropogeni
radioizotop s vremenom poluraspada čak i dužim od onog Pb-210, što ga
čini dobrim dugoročnim ekološkim tragačem. Nedavno je uspostavljena baza
podataka za praćenje radioaktivnosti tla u zraku (GRAMON). Sadrži rezultate mjerenja radioaktivnosti u površinskom zraku na sedam lokacija: Beograd (Srbija),
Ljubljana i Krško (Slovenija), Sarajevo (Bosna i Hercegovina), Podgorica (Crna
Gora), Skopje i Bitola (Sjeverna Makedonija). Naš rad daje statističku analizu
mjesečnih (prosječnih) vrijednosti koncentracija aktivnosti radionuklida za svaku
lokaciju od 2010. do 2019. Rezultati pokazuju prostorne razlike i vremensku
evoluciju radioaktivnosti zraka u ovoj regiji koja je obično nedovoljno zastupljena
u velikim studijama.
AB  - Measurements of activity concentrations of radionuclides Be-7 (beryllium-7), Pb210 (lead210), and Cs-137 (cesium-137) in the Earth’s atmosphere are essential for
understanding atmospheric processes, air quality, and environmental radioactivity.
Beryllium-7 is a radioactive isotope produced primarily by cosmic ray interactions
with nitrogen and oxygen atoms in the upper atmosphere. Its short half-life makes
it a valuable tracer for atmospheric processes on relatively short timescales. Lead210 is a radioactive isotope whose primary source in the atmosphere is decay
of radon gas. With a longer half-life than Be-7, it is suitable for studying longerterm atmospheric processes. Cesium-137, on the other hand, is an anthropogenic
radioisotope with a half-life even longer than that of Pb-210, which makes it a good
long-term environmental tracer.
The Ground Air Radioactivity Monitoring (GRAMON) database has been recently
established. It contains the outcomes of radioactivity measurements in the surface air at seven locations: Belgrade (Serbia), Ljubljana and Krško (Slovenia),
Sarajevo (Bosnia and Herzegovina), Podgorica (Montenegro), Skopje and Bitola
(North Macedonia). Our paper gives a statistical analysis of monthly (average)
values of the radionuclides’ activity concentrations for each location from 2010
to 2019. The results demonstrate spatial differences and temporal evolution of air
radioactivity over this region commonly underrepresented in large-scale studies.
PB  - Bilje : Javna ustanova „Park prirode Kopački rit“
C3  - 12. simpozija s međunarodnim sudjelovanjem KOPAČKI RIT / jučer, danas, sutra / 2023, Osijek, 28. – 29. rujna 2023.
T1  - Mjerenje koncentracija aktivnosti Be-7, Pb-210 i Cs-137 u površinskoj atmosferi
T1  - Measurements of Be-7, Pb-210 and Cs-137 activity concentrations in the surface atmosphere
SP  - 250
EP  - 253
UR  - https://hdl.handle.net/21.15107/rcub_veterinar_3271
ER  - 

@conference{
author = "Zorko, Benjamin and Ajtić, Jelena and Nečemer, Marijan and Sarvan, Darko and Rajačić, Milica and Korun, Matjaž and Vodenik, Branko and Krneta Nikolić, Jelena and Glavič-Cindro, Denis and Vukanac, Ivana and Petrovič, Toni and Ilić, Zorana and Vidic, alf and Didović, Irma and Janušeski, Jovan and Anuševa, Jordanka and Dimovska, Snezana and Danilovski, Dejan and Anđelić, Tomislav and Zekić, Ranko and Svrkota, Nikola and Radonjić, Slavko and Petrinec, Branko",
year = "2023",
abstract = "Mjerenja koncentracije aktivnosti radionuklida Be-7 (berilij-7), Pb-210 (olovo
210) i Cs-137 (cezij-137) u Zemljinoj atmosferi neophodna su za razumijevanje
atmosferskih procesa, kvalitete zraka i radioaktivnosti okoliša. Berilij-7 je
radioaktivni izotop koji prvenstveno nastaje interakcijom kozmičkih zraka s
atomima dušika i kisika u gornjoj atmosferi. Njegov kratki poluživot čini ga
vrijednim tragačem za atmosferske procese u relativno kratkim vremenskim
razdobljima. Olovo-210 je radioaktivni izotop čiji je primarni izvor u atmosferi
raspad plina radona. S dužim poluživotom od Be-7, pogodan je za proučavanje
dugotrajnijih atmosferskih procesa. Cezij-137 je, s druge strane, antropogeni
radioizotop s vremenom poluraspada čak i dužim od onog Pb-210, što ga
čini dobrim dugoročnim ekološkim tragačem. Nedavno je uspostavljena baza
podataka za praćenje radioaktivnosti tla u zraku (GRAMON). Sadrži rezultate mjerenja radioaktivnosti u površinskom zraku na sedam lokacija: Beograd (Srbija),
Ljubljana i Krško (Slovenija), Sarajevo (Bosna i Hercegovina), Podgorica (Crna
Gora), Skopje i Bitola (Sjeverna Makedonija). Naš rad daje statističku analizu
mjesečnih (prosječnih) vrijednosti koncentracija aktivnosti radionuklida za svaku
lokaciju od 2010. do 2019. Rezultati pokazuju prostorne razlike i vremensku
evoluciju radioaktivnosti zraka u ovoj regiji koja je obično nedovoljno zastupljena
u velikim studijama., Measurements of activity concentrations of radionuclides Be-7 (beryllium-7), Pb210 (lead210), and Cs-137 (cesium-137) in the Earth’s atmosphere are essential for
understanding atmospheric processes, air quality, and environmental radioactivity.
Beryllium-7 is a radioactive isotope produced primarily by cosmic ray interactions
with nitrogen and oxygen atoms in the upper atmosphere. Its short half-life makes
it a valuable tracer for atmospheric processes on relatively short timescales. Lead210 is a radioactive isotope whose primary source in the atmosphere is decay
of radon gas. With a longer half-life than Be-7, it is suitable for studying longerterm atmospheric processes. Cesium-137, on the other hand, is an anthropogenic
radioisotope with a half-life even longer than that of Pb-210, which makes it a good
long-term environmental tracer.
The Ground Air Radioactivity Monitoring (GRAMON) database has been recently
established. It contains the outcomes of radioactivity measurements in the surface air at seven locations: Belgrade (Serbia), Ljubljana and Krško (Slovenia),
Sarajevo (Bosnia and Herzegovina), Podgorica (Montenegro), Skopje and Bitola
(North Macedonia). Our paper gives a statistical analysis of monthly (average)
values of the radionuclides’ activity concentrations for each location from 2010
to 2019. The results demonstrate spatial differences and temporal evolution of air
radioactivity over this region commonly underrepresented in large-scale studies.",
publisher = "Bilje : Javna ustanova „Park prirode Kopački rit“",
journal = "12. simpozija s međunarodnim sudjelovanjem KOPAČKI RIT / jučer, danas, sutra / 2023, Osijek, 28. – 29. rujna 2023.",
title = "Mjerenje koncentracija aktivnosti Be-7, Pb-210 i Cs-137 u površinskoj atmosferi, Measurements of Be-7, Pb-210 and Cs-137 activity concentrations in the surface atmosphere",
pages = "250-253",
url = "https://hdl.handle.net/21.15107/rcub_veterinar_3271"
}

Zorko, B., Ajtić, J., Nečemer, M., Sarvan, D., Rajačić, M., Korun, M., Vodenik, B., Krneta Nikolić, J., Glavič-Cindro, D., Vukanac, I., Petrovič, T., Ilić, Z., Vidic, a., Didović, I., Janušeski, J., Anuševa, J., Dimovska, S., Danilovski, D., Anđelić, T., Zekić, R., Svrkota, N., Radonjić, S.,& Petrinec, B.. (2023). Mjerenje koncentracija aktivnosti Be-7, Pb-210 i Cs-137 u površinskoj atmosferi. in 12. simpozija s međunarodnim sudjelovanjem KOPAČKI RIT / jučer, danas, sutra / 2023, Osijek, 28. – 29. rujna 2023.
Bilje : Javna ustanova „Park prirode Kopački rit“., 250-253.
https://hdl.handle.net/21.15107/rcub_veterinar_3271

Zorko B, Ajtić J, Nečemer M, Sarvan D, Rajačić M, Korun M, Vodenik B, Krneta Nikolić J, Glavič-Cindro D, Vukanac I, Petrovič T, Ilić Z, Vidic A, Didović I, Janušeski J, Anuševa J, Dimovska S, Danilovski D, Anđelić T, Zekić R, Svrkota N, Radonjić S, Petrinec B. Mjerenje koncentracija aktivnosti Be-7, Pb-210 i Cs-137 u površinskoj atmosferi. in 12. simpozija s međunarodnim sudjelovanjem KOPAČKI RIT / jučer, danas, sutra / 2023, Osijek, 28. – 29. rujna 2023.. 2023;:250-253.
https://hdl.handle.net/21.15107/rcub_veterinar_3271 .

Zorko, Benjamin, Ajtić, Jelena, Nečemer, Marijan, Sarvan, Darko, Rajačić, Milica, Korun, Matjaž, Vodenik, Branko, Krneta Nikolić, Jelena, Glavič-Cindro, Denis, Vukanac, Ivana, Petrovič, Toni, Ilić, Zorana, Vidic, alf, Didović, Irma, Janušeski, Jovan, Anuševa, Jordanka, Dimovska, Snezana, Danilovski, Dejan, Anđelić, Tomislav, Zekić, Ranko, Svrkota, Nikola, Radonjić, Slavko, Petrinec, Branko, "Mjerenje koncentracija aktivnosti Be-7, Pb-210 i Cs-137 u površinskoj atmosferi" in 12. simpozija s međunarodnim sudjelovanjem KOPAČKI RIT / jučer, danas, sutra / 2023, Osijek, 28. – 29. rujna 2023. (2023):250-253,
https://hdl.handle.net/21.15107/rcub_veterinar_3271 .

TY  - CONF
AU  - Ajtić, Jelena
AU  - Rajačić, Milica
AU  - Krneta Nikolić, Jelena
AU  - Vukanac, Ivana
AU  - Ilić, Zorana
AU  - Vidic, Alfred
AU  - Didović, Irma
AU  - Janushesk, Jovan
AU  - Anusheva, Jordanka
AU  - Dimovska, Snežana
AU  - Danilovski, Dejan
AU  - Anđelić, Tomislav
AU  - Zekić, Ranko
AU  - Svrkota, Nikola
AU  - Radonjić, Slavko
AU  - Vodenik, Branko
AU  - Zorko, Benjamin
PY  - 2023
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/3269
AB  - U radu je predstavljena novoformirana baza podataka GRAMON (Ground Air Radioactivity Monitoring) koja sadrži rezultate merenja radioaktivnosti u vazduhu na sedam lokacija: Beograd (Srbija), Ljubljana i Krško (Slovenija), Sarajevo (Bosna i Hercegovina), Podgorica (Crna Gora), Skoplje i Bitola (Severna Makedonija). Iz baze su za sve lokacije preuzete mesečne vrednosti specifične aktivnosti prirodnog radionuklida berilijuma-7 i potom analizirani deskriptivni statistički parametri od januara 2010. do decembra 2019. godine.
Srednje vrednosti specifične aktivnosti berilijuma-7 tokom ovog perioda kreću se od 3,32 mBq/m3 u Sarajevu do 5,93 mBq/m3 u Beogradu. Koeficijent varijacije najmanji je za Krško (37,7%) i Sarajevo (38,6%), a najveći za Beograd (54,8%) i Bitolu (72,4%). Ipak, 3σ-opsezi svih sedam vremenskih serija se preklapaju. U daljoj statističkoj analizi biće ispitano da li među ovim vremenskim serijama postoje značajne razlike.
PB  - Institut za nuklearne nauke „Vinča“
PB  - Društvo za zaštitu od zračenja Srbije i Srne Gore
C3  - XXXII Simpozijum Društva za zaštitu od zračenja Srbije i Crne Gore, Budva, 4 - 6. oktobar 2023
T1  - GRAMON baza podataka: Desetogodišnja merenja specifične aktivnosti berilijuma-7 u vazduhu
SP  - 30
EP  - 35
UR  - https://hdl.handle.net/21.15107/rcub_veterinar_3269
ER  - 

@conference{
author = "Ajtić, Jelena and Rajačić, Milica and Krneta Nikolić, Jelena and Vukanac, Ivana and Ilić, Zorana and Vidic, Alfred and Didović, Irma and Janushesk, Jovan and Anusheva, Jordanka and Dimovska, Snežana and Danilovski, Dejan and Anđelić, Tomislav and Zekić, Ranko and Svrkota, Nikola and Radonjić, Slavko and Vodenik, Branko and Zorko, Benjamin",
year = "2023",
abstract = "U radu je predstavljena novoformirana baza podataka GRAMON (Ground Air Radioactivity Monitoring) koja sadrži rezultate merenja radioaktivnosti u vazduhu na sedam lokacija: Beograd (Srbija), Ljubljana i Krško (Slovenija), Sarajevo (Bosna i Hercegovina), Podgorica (Crna Gora), Skoplje i Bitola (Severna Makedonija). Iz baze su za sve lokacije preuzete mesečne vrednosti specifične aktivnosti prirodnog radionuklida berilijuma-7 i potom analizirani deskriptivni statistički parametri od januara 2010. do decembra 2019. godine.
Srednje vrednosti specifične aktivnosti berilijuma-7 tokom ovog perioda kreću se od 3,32 mBq/m3 u Sarajevu do 5,93 mBq/m3 u Beogradu. Koeficijent varijacije najmanji je za Krško (37,7%) i Sarajevo (38,6%), a najveći za Beograd (54,8%) i Bitolu (72,4%). Ipak, 3σ-opsezi svih sedam vremenskih serija se preklapaju. U daljoj statističkoj analizi biće ispitano da li među ovim vremenskim serijama postoje značajne razlike.",
publisher = "Institut za nuklearne nauke „Vinča“, Društvo za zaštitu od zračenja Srbije i Srne Gore",
journal = "XXXII Simpozijum Društva za zaštitu od zračenja Srbije i Crne Gore, Budva, 4 - 6. oktobar 2023",
title = "GRAMON baza podataka: Desetogodišnja merenja specifične aktivnosti berilijuma-7 u vazduhu",
pages = "30-35",
url = "https://hdl.handle.net/21.15107/rcub_veterinar_3269"
}

Ajtić, J., Rajačić, M., Krneta Nikolić, J., Vukanac, I., Ilić, Z., Vidic, A., Didović, I., Janushesk, J., Anusheva, J., Dimovska, S., Danilovski, D., Anđelić, T., Zekić, R., Svrkota, N., Radonjić, S., Vodenik, B.,& Zorko, B.. (2023). GRAMON baza podataka: Desetogodišnja merenja specifične aktivnosti berilijuma-7 u vazduhu. in XXXII Simpozijum Društva za zaštitu od zračenja Srbije i Crne Gore, Budva, 4 - 6. oktobar 2023
Institut za nuklearne nauke „Vinča“., 30-35.
https://hdl.handle.net/21.15107/rcub_veterinar_3269

Ajtić J, Rajačić M, Krneta Nikolić J, Vukanac I, Ilić Z, Vidic A, Didović I, Janushesk J, Anusheva J, Dimovska S, Danilovski D, Anđelić T, Zekić R, Svrkota N, Radonjić S, Vodenik B, Zorko B. GRAMON baza podataka: Desetogodišnja merenja specifične aktivnosti berilijuma-7 u vazduhu. in XXXII Simpozijum Društva za zaštitu od zračenja Srbije i Crne Gore, Budva, 4 - 6. oktobar 2023. 2023;:30-35.
https://hdl.handle.net/21.15107/rcub_veterinar_3269 .

Ajtić, Jelena, Rajačić, Milica, Krneta Nikolić, Jelena, Vukanac, Ivana, Ilić, Zorana, Vidic, Alfred, Didović, Irma, Janushesk, Jovan, Anusheva, Jordanka, Dimovska, Snežana, Danilovski, Dejan, Anđelić, Tomislav, Zekić, Ranko, Svrkota, Nikola, Radonjić, Slavko, Vodenik, Branko, Zorko, Benjamin, "GRAMON baza podataka: Desetogodišnja merenja specifične aktivnosti berilijuma-7 u vazduhu" in XXXII Simpozijum Društva za zaštitu od zračenja Srbije i Crne Gore, Budva, 4 - 6. oktobar 2023 (2023):30-35,
https://hdl.handle.net/21.15107/rcub_veterinar_3269 .

TY  - CONF
AU  - Ajtić, Jelena
AU  - Sarvan, Darko
AU  - Rajačić, Milica
AU  - Krneta Nikolić, Jelena
AU  - Vukanac, Ivana
AU  - Ilić, Zorana
AU  - Vidic, Alfred
AU  - Didović, Irma
AU  - Janušeski, Jovan
AU  - Anusheva, Jordanka
AU  - Dimovska, Snezana
AU  - Danilovski, Dejan
AU  - Anđelić, Tomislav
AU  - Zekić, Ranko
AU  - Svrkota, Nikola
AU  - Radonjić, Slavko
AU  - Vodenik, Branko
AU  - Zorko, Benjamin
PY  - 2023
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/3003
AB  - Ground Air Radioactivity Monitoring (GRAMON) database is a recently established collection containing activity concentrations of gamma emitters in aerosol samples. The measurements come
from Serbia (sampling site Belgrade), Slovenia (sampling sites Ljubljana and Krško), Bosnia and
Herzegovina (sampling site Sarajevo), Montenegro (sampling site Podgorica), and North Macedonia (sampling sites Skopje and Bitola), thus covering the northern and central parts of the Balkan Peninsula.
As a database arising from the monitoring programmes in several countries, GRAMON is not
fully homogeneous in terms of the radionuclides and time periods studied. For example, the
beryllium-7 records are available for all sampling sites, while the lead-210 records only in Serbia,
Slovenia, and Bosnia and Herzegovina. The time series for Serbia and Slovenia began in 1991, for
Montenegro and North Macedonia in 2008, and for Bosnia and Herzegovina in 2010.
However, sampling, sample preparation, and measurement procedures across the sites and
laboratories are similar. In brief, aerosol samples are collected on filter papers using air samplers.
Activity concentrations of radionuclides are determined by standard gamma spectrometry using
high-purity germanium detectors. The time series contain monthly mean activity concentrations.
Since only some of the GRAMON records have been previously published, this database provides
a source for radioactivity research in the region that has been underrepresented in large-scale
studies. We further hope to expand the number of contributing laboratories and cover a wider region of Europe, especially its southern and eastern parts.
PB  - Niš : Sievert Association
C3  - International Conference on Radiation Applications RAP, Anavyssos, May 29 - June 2, 2023
T1  - Introducing a regional database of radioactivity in the air – GRAMON
SP  - 91
EP  - 91
UR  - https://hdl.handle.net/21.15107/rcub_veterinar_3003
ER  - 

@conference{
author = "Ajtić, Jelena and Sarvan, Darko and Rajačić, Milica and Krneta Nikolić, Jelena and Vukanac, Ivana and Ilić, Zorana and Vidic, Alfred and Didović, Irma and Janušeski, Jovan and Anusheva, Jordanka and Dimovska, Snezana and Danilovski, Dejan and Anđelić, Tomislav and Zekić, Ranko and Svrkota, Nikola and Radonjić, Slavko and Vodenik, Branko and Zorko, Benjamin",
year = "2023",
abstract = "Ground Air Radioactivity Monitoring (GRAMON) database is a recently established collection containing activity concentrations of gamma emitters in aerosol samples. The measurements come
from Serbia (sampling site Belgrade), Slovenia (sampling sites Ljubljana and Krško), Bosnia and
Herzegovina (sampling site Sarajevo), Montenegro (sampling site Podgorica), and North Macedonia (sampling sites Skopje and Bitola), thus covering the northern and central parts of the Balkan Peninsula.
As a database arising from the monitoring programmes in several countries, GRAMON is not
fully homogeneous in terms of the radionuclides and time periods studied. For example, the
beryllium-7 records are available for all sampling sites, while the lead-210 records only in Serbia,
Slovenia, and Bosnia and Herzegovina. The time series for Serbia and Slovenia began in 1991, for
Montenegro and North Macedonia in 2008, and for Bosnia and Herzegovina in 2010.
However, sampling, sample preparation, and measurement procedures across the sites and
laboratories are similar. In brief, aerosol samples are collected on filter papers using air samplers.
Activity concentrations of radionuclides are determined by standard gamma spectrometry using
high-purity germanium detectors. The time series contain monthly mean activity concentrations.
Since only some of the GRAMON records have been previously published, this database provides
a source for radioactivity research in the region that has been underrepresented in large-scale
studies. We further hope to expand the number of contributing laboratories and cover a wider region of Europe, especially its southern and eastern parts.",
publisher = "Niš : Sievert Association",
journal = "International Conference on Radiation Applications RAP, Anavyssos, May 29 - June 2, 2023",
title = "Introducing a regional database of radioactivity in the air – GRAMON",
pages = "91-91",
url = "https://hdl.handle.net/21.15107/rcub_veterinar_3003"
}

Ajtić, J., Sarvan, D., Rajačić, M., Krneta Nikolić, J., Vukanac, I., Ilić, Z., Vidic, A., Didović, I., Janušeski, J., Anusheva, J., Dimovska, S., Danilovski, D., Anđelić, T., Zekić, R., Svrkota, N., Radonjić, S., Vodenik, B.,& Zorko, B.. (2023). Introducing a regional database of radioactivity in the air – GRAMON. in International Conference on Radiation Applications RAP, Anavyssos, May 29 - June 2, 2023
Niš : Sievert Association., 91-91.
https://hdl.handle.net/21.15107/rcub_veterinar_3003

Ajtić J, Sarvan D, Rajačić M, Krneta Nikolić J, Vukanac I, Ilić Z, Vidic A, Didović I, Janušeski J, Anusheva J, Dimovska S, Danilovski D, Anđelić T, Zekić R, Svrkota N, Radonjić S, Vodenik B, Zorko B. Introducing a regional database of radioactivity in the air – GRAMON. in International Conference on Radiation Applications RAP, Anavyssos, May 29 - June 2, 2023. 2023;:91-91.
https://hdl.handle.net/21.15107/rcub_veterinar_3003 .

Ajtić, Jelena, Sarvan, Darko, Rajačić, Milica, Krneta Nikolić, Jelena, Vukanac, Ivana, Ilić, Zorana, Vidic, Alfred, Didović, Irma, Janušeski, Jovan, Anusheva, Jordanka, Dimovska, Snezana, Danilovski, Dejan, Anđelić, Tomislav, Zekić, Ranko, Svrkota, Nikola, Radonjić, Slavko, Vodenik, Branko, Zorko, Benjamin, "Introducing a regional database of radioactivity in the air – GRAMON" in International Conference on Radiation Applications RAP, Anavyssos, May 29 - June 2, 2023 (2023):91-91,
https://hdl.handle.net/21.15107/rcub_veterinar_3003 .