Nagy, Borbála, et al. “The Improvement of the Quality Assessment and Cryopreservation Methods in Volga Pikeperch (Sander Volgensis) Sperm Obtained from the Lake Balaton for Practical and Conservation Purposes”. Animal Welfare, Ethology and Housing Systems (AWETH), vol. 16, no. 2, Dec. 2020, pp. 163-9, https://doi.org/10.17205/SZIE.AWETH.2020.2.163.