| Plante vasculare din Romānia. Determinator ilustrat de teren I SĀRBU, N ŞTEFAN, A OPREA "Victor B Victor", Bucureşti, 2013 | 294 | 2013 |
| Lista critică a plantelor vasculare din Romānia A Oprea Editura Universităţii" Alexandru Ioan Cuza, 2005 | 262 | 2005 |
| Manual de interpretare a habitatelor Natura 2000 din Romānia /Handbook for interpretation of Natura 2000 habitats from Romania/ D GAFTA, MJO eds.), V ALEXIU, P ANASTASIU, M BĂRBOS, ... Edit. Risoprint, Cluj-Napoca, 2008 | 206* | 2008 |
| Les associations végétales de Roumanie. T 2. Les associations anthropogčnes GH COLDEA, A OPREA, I SĀRBU, C SĪRBU, N ŞTEFAN Presa Universitară Clujeană, 2012 | 177* | 2012 |
| Chemical, Antioxidant and Antimicrobial Investigations of Pinus cembra L. Bark and Needles CL Apetrei, C Tuchilus, AC Aprotosoaie, A Oprea, KE Malterud, A Miron Molecules 16 (9), 7773-7788, 2011 | 89 | 2011 |
| Arii speciale pentru protecţia şi conservarea plantelor īn Romānia A SĀRBU, I SĀRBU, A OPREA, NEGREAN, G., V CRISTEA, G COLDEA, ... Edit. Victor B. Victor, Bucuresti, 2007 | 71 | 2007 |
| A preliminary study on the neophytes of wetlands in Romania P Anastasiu, G Negrean, C Başnou, C Sīrbu, A Oprea Biological invasions–From ecology to conservation (NEOBIOTA) 7, 181-192, 2007 | 53 | 2007 |
| Preliminary study on neophytes from wetlands of Romania P ANASTASIU, G NEGREAN, C BAŞNOU, C SĪRBU, A OPREA roceeding of 4th European Conference on Biological Invasions, 27-29 …, 2006 | 53 | 2006 |
| Several fruit characteristics of Rosa sp. genotypes from the Northeastern region of Romania CM Rosu, C Manzu, Z Olteanu, L Oprica, A Oprea, E Ciornea, ... Notulae Botanicae Horti Agrobotanici Cluj-Napoca 39 (2), 203-208, 2011 | 51 | 2011 |
| Plante adventive īn flora Romāniei C SĪRBU, A OPREA Edit. "Ion Ionescu de la Brad", Iasi, 2011 | 51 | 2011 |
| Alpine–subalpine species richness of the Romanian Carpathians and the current conservation status of rare species G Coldea, IA Stoica, M Puşcaş, T Ursu, A Oprea, IntraBioDiv Consortium Biodiversity and Conservation 18, 1441-1458, 2009 | 35 | 2009 |
| Alpine–subalpine species richness of the Romanian Carpathians and the current conservation status of rare species G Coldea, IA Stoica, M Puşcaş, T Ursu, A Oprea, IntraBioDiv Consortium Biodiversity and Conservation 18, 1441-1458, 2009 | 35 | 2009 |
| Alpine-subalpine species richness of the Romanian Carpathians and the current conservation status of rare species G Coldea, IA Stoica, M Puşcaş, T Ursu, A Oprea Biodivers. & Conservation 18 (6), 1441-1458, 2009 | 35 | 2009 |
| State and trait anxiety as a psychopathological phenomenon correlated with postpartum depression in a Romanian sample: a pilot study VR Enatescu, I Enatescu, M Craina, A Gluhovschi, I Papava, R Romosan, ... Journal of Psychosomatic Obstetrics & Gynecology 35 (2), 55-61, 2014 | 27 | 2014 |
| Two alien species in the spreading process in Romania: Reynoutria x bohemica Chrtek & Chrtkovį and Grindelia squarrosa (Pursh) Dunal C Sīrbu, A Oprea “Ion Ionescu de la Brad” University of Agricultural Sciences and Veterinary …, 2007 | 27 | 2007 |
| New contribution to the study of alien flora in Romania. S Culiţă, O Adrian, F Peter Journal of Plant Development 18, 2011 | 25 | 2011 |
| New contribution to the study of alien flora in Romania. S Culiţă, O Adrian, F Peter Journal of Plant Development 18, 2011 | 25 | 2011 |
| Neophyte invasion in Moldavia (eastern Romania) in different habitat types C Sīrbu, A Oprea, C Samuil, C Tănase Folia Geobotanica 47, 215-229, 2012 | 20 | 2012 |
| Lista critică a plantelor vasculare din Romānia.[Critical list of vascular plants of Romania.] A Oprea Univ." Al. Ioan Cuza", Iasi, 2005 | 20 | 2005 |
| Contribution to the study of plant communities dominated by Ailanthus altissima (Mill.) Swingle, in the Eastern Romania (Moldavia) C Sīrbu, A Oprea " Ion Ionescu de la Brad" University of Agricultural Sciences and Veterinary …, 2010 | 19 | 2010 |
