M., Hundža, Janiga M., Solár J., and Gondová B. “Water Quality of the River Váh - Ružomberok (Slovakia), Experience After 35-Year Water Treatment”. Oecologia Montana 28, no. 1 (July 30, 2019): 1-6. Accessed September 18, 2020. http://om.vuvb.uniza.sk/index.php/OM/article/view/321.