- Article in journal2000. Diet composition of badgers (Meles meles) in a pristine forest and rural habitats of Poland compared to other European populations. Journal of Zoology, London 250 : 495-505.
- Book chapter2000. Balanoposthitis of the European bison (Bison bonasus). In: Proceedings of International Symposium 'European bison - yesterday, taday and tomorrow' Siauliai, 9-10 December 2000. Siauliai University, Siauliai : 68-73.
- Article in journal2000. Necrobacillosis in free-living male European bison in Poland. Journal of Wildlife Diseases 36 : 248-256.
- Article in journal2000. Prey selection and predation by wolves in Białowieża Primeval Forest, Poland. Journal of Mammalogy 81 : 197-212. PDF
- Article in journal2000. Activity patterns of radio-tracked weasels Mustela nivalis in Białowieża National park (E Poland). Annales Zoologici Fennici 37 : 161-168.
- Article in journal2000. Badger density and distributionof setts in Białowieżqa Primeval Forest (Poland and Belarus) compared to other Eurasian populations. Acta Theriologica 45 : 395-408. DOI: 10.4098/AT.arch.00-39 PDF
- Article in journal2000. Factors affecting the variability in home range size and distribution in European bison in the Polish and Belarussian parts of the Białowieża Forest. Acta Theriologica 45 : 321-334. DOI: 10.4098/AT.arch.00-32 PDF
- Article in journal2000. Karyotypic variation of the common shrew Sorex araneus in Belarus, Estonia, Latvia, Lithuania and Ukraine. Acta Theriologica 45, Suppl. 1 : 47-58. DOI: 10.4098/AT.arch.00-61
- Article in journal2000. Roosting sites of Leisler's bat Nyctalus leisleri in Białowieża Forest - preliminary results. Myotis 37 : 55-60.
- Article in journal2000. Habitat preferences of four sympatric species of shrews. Acta Theriologica 45, Suppl. 1 : 173-190. DOI: 10.4098/AT.arch.00-72
