| The status of the world's land and marine mammals: diversity, threat, and knowledge J Schipper, JS Chanson, F Chiozza, NA Cox, M Hoffmann, V Katariya, ... Science 322 (5899), 225-230, 2008 | 1840 | 2008 |
| The impact of conservation on the status of the world’s vertebrates M Hoffmann, C Hilton-Taylor, A Angulo, M Böhm, TM Brooks, ... science 330 (6010), 1503-1509, 2010 | 1803 | 2010 |
| European bison: status survey and conservation action plan Z Pucek, IP Belousova, ZA Krasiński, W Olech IUCN, 2004 | 194 | 2004 |
| European bison M Krasińska, ZA Krasiński, W Olech, K Perzanowski The Nature Monograph. Mammal Research Institute PAS, Białowieża 318, 2007 | 124 | 2007 |
| Rearing of pike‐perch larvae using formulated diets–first success with starter feeds T Ostaszewska, K Dabrowski, K Czumińska, W Olech, M Olejniczak Aquaculture research 36 (12), 1167-1176, 2005 | 115 | 2005 |
| A genetic background for reintroduction program of the European bison (Bison bonasus) in the Carpathians W Olech, K Perzanowski Biological Conservation 108 (2), 221-228, 2002 | 75 | 2002 |
| Bisoniana XCVIII. Analysis of inbreeding in European bison W Olech Acta theriologica 32 (22), 373-387, 1987 | 59 | 1987 |
| Constraints for re-establishing a meta-population of the European bison in Ukraine K Perzanowski, W Olech, I Kozak Biological conservation 120 (3), 345-353, 2004 | 50 | 2004 |
| Bisoniana 119. Phylogeny and genetic variation of the European bison Bison bonasus based on mitochondrial DNA D-loop sequences B Burzyńska, W Olech, J Topczewski Acta Theriologica 44 (3), 253-262, 1999 | 43 | 1999 |
| Community attitudes to the European bison Bison bonasus in areas where its reintroduction is planned and in areas with existing populations in northeastern Poland D Klich, W Olech, R Łopucki, K Danik European Journal of Wildlife Research 64, 1-9, 2018 | 41 | 2018 |
| The participation of ancestral genes in the existing population of European bison W Olech Acta theriologica 34 (29), 397-407, 1989 | 35 | 1989 |
| The changes of founders’ number and their contribution to the European bison population during 80 years of species’ restitution W Olech European Bison Conservation Newsletter 2, 54-60, 2009 | 34 | 2009 |
| Pesticides and conservation of large ungulates: Health risk to European bison from plant protection products as a result of crop depredation D Klich, R Łopucki, A Stachniuk, M Sporek, E Fornal, M Wojciechowska, ... PLoS One 15 (1), e0228243, 2020 | 33 | 2020 |
| Possibilities of using the European bison (Bison bonasus) epididymal spermatozoa collected post-mortem for cryopreservation and artificial insemination: a pilot … R Kozdrowski, W Niżański, A Dubiel, W Olech Reproductive biology and endocrinology 9, 1-6, 2011 | 33 | 2011 |
| Serological Study of Exposure to Selected Arthropod‐Borne Pathogens in European Bison (Bison bonasus) in Poland MK Krzysiak, W Iwaniak, J Kęsik‐Maliszewska, W Olech, M Larska Transboundary and emerging diseases 64 (5), 1411-1423, 2017 | 31 | 2017 |
| One size does not fit all: European bison habitat selection across herds and spatial scales T Kuemmerle, C Levers, B Bleyhl, W Olech, K Perzanowski, C Reusch, ... Landscape Ecology 33, 1559-1572, 2018 | 30 | 2018 |
| A future for European bison Bison bonasus in the Carpathian ecoregion? K Perzanowski, W Olech Wildlife Biology 13 (1), 108-112, 2007 | 30 | 2007 |
| Microbiological and molecular monitoring for bovine tuberculosis in the Polish population of European bison (Bison bonasus) A Didkowska, B Orłowska, M Krajewska-Wędzina, ... | 27 | 2021 |
| Wpływ inbredu osobniczego i inbredu matki na przezywalnosc cielat zubra (Bison bonasus) W Olech | 27 | 2003 |
| The number of ancestors and their contribution to European bison (Bison bonasus L.) population. W Olech Annals of Warsaw Agricultural University, Animal Science, 111-117, 2000 | 27 | 2000 |
