Tvrdá, Eva, Peter Sikeli, Jana Lukáčová, Peter Massányi, and Norbert Lukáč. 2013. “MINERAL NUTRIENTS AND MALE FERTILITY”. Journal of Microbiology, Biotechnology and Food Sciences 3 (1):1-14. https://office2.jmbfs.org/index.php/JMBFS/article/view/7068.