| Ambient ozone in forests of the Central and Eastern European mountains A Bytnerowicz, B Godzik, K Grodzińska, W Fraczek, R Musselman, ... Environmental Pollution 130 (1), 5-16, 2004 | 85 | 2004 |
| Distribution of ozone and other air pollutants in forests of the Carpathian Mountains in central Europe A Bytnerowicz, B Godzik, W Frączek, K Grodzińska, M Krywult, O Badea, ... Environmental Pollution 116 (1), 3-25, 2002 | 83 | 2002 |
| Nature conservation in Central and Eastern Europe with a special emphasis on the Carpathian Mountains J Oszlányi, K Grodzińska, O Badea, Y Shparyk Environmental Pollution 130 (1), 127-134, 2004 | 58 | 2004 |
| Air pollution, precipitation chemistry and forest health in the Retezat Mountains, Southern Carpathians, Romania A Bytnerowicz, O Badea, F Popescu, R Musselman, M Tanase, I Barbu, ... Environmental Pollution 137 (3), 546-567, 2005 | 49 | 2005 |
| Chemical and morphological characteristics of key tree species of the Carpathian Mountains B Maňkovská, B Godzik, O Badea, Y Shparyk, P Moravčı́k Environmental Pollution 130 (1), 41-54, 2004 | 46 | 2004 |
| New international long-term ecological research on air pollution effects on the Carpathian Mountain forests, Central Europe A Bytnerowicz, O Badea, I Barbu, P Fleischer, W Frączek, V Gancz, ... Environment International 29 (2-3), 367-376, 2003 | 44 | 2003 |
| Forest health status in the Carpahian Mountains over the period 1997–2001 O Badea, M Tanase, J Georgeta, L Anisoara, A Peiov, H Uhlirova, J Pajtik, ... Environmental Pollution 130 (1), 93-98, 2004 | 43 | 2004 |
| Vegetation of the selected forest stands and land use in the Carpathian Mountains K Grodzińska, B Godzik, W Frączek, O Badea, J Oszlanyi, D Postelnicu, ... Environmental Pollution 130 (1), 17-32, 2004 | 31 | 2004 |
| Effects of a three-year exposure to ambient ozone on biomass allocation in poplar using ethylenediurea Y Hoshika, F Pecori, I Conese, T Bardelli, E Marchi, WJ Manning, ... Environmental pollution 180, 299-303, 2013 | 30 | 2013 |
| A new-generation 3D ozone FACE (free air controlled exposure) E Paoletti, A Materassi, G Fasano, Y Hoshika, G Carriero, D Silaghi, ... Science of The Total Environment 575, 1407-1414, 2017 | 22 | 2017 |
| Manual privind metodologia de supraveghere pe termen lung a stării ecosistemelor forestiere aflate sub acțiunea poluării atmosferice și modificărilor climatice O Badea Ed. Silvică, Bucharest, 2008 | 12 | 2008 |
| Dendroclimatic response variability of Quercus species in the Romanian intensive forest monitoring network P Ionel, L Stefan, CR Adam, C Sidor, O Badea Notulae Botanicae Horti Agrobotanici Cluj-Napoca 41 (1), 326-332, 2013 | 11 | 2013 |
| Starea de sănătate a pădurilor din România în perioada anilor 1990-2005 evaluată prin sistemul de monitoring forestier O Badea, Ş Neagu, D Robu Revista pădurilor 1, 8-13, 2006 | 11 | 2006 |
| Ozone, sulfur dioxide and nitrogen dioxide air pollution in forests of the Carpathian Mountains A Bytnerowicz, B Godzik, W Fraczek, K Grodzinska, M Krywult, O Badea, ... NATO SCIENCE SERIES SUB SERIES I LIFE AND BEHAVIOURAL SCIENCES 345, 138-160, 2002 | 11 | 2002 |
| Status of the Southern Carpathian forests in the long-term ecological research network O Badea, A Bytnerowicz, D Silaghi, S Neagu, I Barbu, C Iacoban, C Iacob, ... Environmental monitoring and assessment 184 (12), 7491-7515, 2012 | 9 | 2012 |
| Chemical and morphological changes in Carpathian Mountains trees caused by air pollution B Mankovská, M Cerny, P Moravcik, B Godzik, K Grodzinska, O Badea, ... NATO SCIENCE SERIES SUB SERIES I LIFE AND BEHAVIOURAL SCIENCES 345, 173-184, 2002 | 9 | 2002 |
| Ozone exposure affects tree defoliation in a continental climate A De Marco, M Vitale, I Popa, A Anav, O Badea, D Silaghi, S Leca, ... Science of the Total Environment 596, 396-404, 2017 | 7 | 2017 |
| Starea de sănătate a pădurilor din România în intervalul 1986-2000 A Simionescu, V Mihalciuc, D Lupu, A Vlăduleasa, O Badea, T Fulicea Editura Mușatinii, Suceava, 2001 | 7 | 2001 |
| Fundamente dendrometrice şi auxologice pentru monitoringul forestier O Badea Rezumatul Tezei, de doctorat, Suceava, 1998 | 7 | 1998 |
| Ozone risk assessment is affected by nutrient availability: evidence from a simulation experiment under free air controlled exposure (FACE) L Zhang, Y Hoshika, E Carrari, O Badea, E Paoletti Environmental pollution 238, 812-822, 2018 | 5 | 2018 |
