Hudák, M., M. Randis, T. Bartaloš, M. Kmeťová, I. Kosová, and M. Horník. “The Preliminary Study of the Selected Environmental Effects Around the Paper Industry”. Oecologia Montana 24, no. 2 (December 1, 2015): 78-83. Accessed October 2, 2020. http://om.vuvb.uniza.sk/index.php/OM/article/view/275.