ŠIRKA, Pavel et al. Bryophyte flora of the Košice Zoo (E Slovakia). In Thaiszia - journal of botany. ISSN 1210-0420, 2022, vol. 32, no. 2, p. 129-149. VEGA 1/0624/21. SCOPUS. Dostupné na internete: <https://www.upjs.sk/public/media/27389/03_Sirka-etal_fin.pdf>