Kňažická*, Z., N. Lukáč, A. Grén, G. Formicki, and P. Massányi. “IN VITRO EFFECTS OF COPPER ON THE MOTILITY AND VIABILITY OF SPERMATOZOA”. Journal of Microbiology, Biotechnology and Food Sciences, vol. 1, no. 6, June 2012, pp. 1529-3, https://office2.jmbfs.org/index.php/JMBFS/article/view/7226.