- Book chapter2004. Zakład Badania Ssaków w Białowieży. In: Eseje o ssakach Puszczy Białowieskiej. Eds. Jędrzejewska B, Wójcik JM. Zakład Badania Ssaków PAN, Białowieża : 197-202.
- Book chapter2004. Geographical and seasonal variation in food habits and prey size of the European pine martens. In: Martens and fishers (Martes) in human-altered environments: an international perspective. Eds. Harrison DJ, et al. (eds.). Springer, New York : 77-98. PDF
- Article in journal2004. Evolutionary implications of morphological variation in the lower carnassial of red fox Vulpes vulpes. Acta Theriologica 49 : 433-447. DOI: https://doi.org/10.1007/BF03192588 PDF
- Article in journal2004. Has the condition of European bison deteriorated over last twenty years?. Acta Theriologica 49 : 405-418. DOI: https://doi.org/10.1007/BF03192538 PDF
- Article in journal2004. The mammalian model for population studies of B chromosomes: the wood mouse (Apodemus) . Cytogenetic and Genome Research 106 : 264-270. DOI: ttps://doi.org/10.1159/000079297
- Article in journal2004. Does the reproduction of locomotor activity serve as an aggression avoidance mechanism in shrews (Soricidae)?. Electronic Journal of Polish Agricultural Universities, Biology 7(2)
- Article in journal2004. Genetyczne mechanizmy różnicowania gonad ssaków. Acta Scientiarum Polonorum, sekcja: Medicina Veterinaria 3 : 3-10.
- Article in journal2004. Cases of spermiogenesis in young European bison. Acta Theriologica 49 : 543-554. DOI: https://doi.org/10.1007/BF03192597 PDF
- Article in journal2004. Mother-calf relationships and maternal investment in European bison Bison bonasus. Acta Theriologica 49 : 555-566. DOI: https://doi.org/10.1007/BF03192598 PDF
- Article in journal2004. Hisotria ponownego odkrycia żubrów na Kaukazie w XIX wieku. Przegląd Zoologiczny 48 : 73-82.
