V. Makarevich, A., E. Å paleková, L. Stádník, E. Kubovičová, and F. Louda. “BREED DIFFERENCES IN SEVERAL CHARACTERISTICS OF BULL FROZEN-THAWED SPERM”. Journal of Microbiology, Biotechnology and Food Sciences, vol. 2, no. Abstracts special issue, June 2013, p. 6, https://office2.jmbfs.org/index.php/JMBFS/article/view/7519.