Witkowski, Z., A. Dyduch-Falniowska, M. Makomaska-Juchiewicz, R. Kaźmierczakowa, M. Kotulski, J. Perzanowska, R. Serafin, P. Skawiński, and K. Zając. “Preliminary Assessment of the Environmental Impacts of the Zakopane 2006 Winter Olympic Games Proposal”. Oecologia Montana, Vol. 7, no. 1-2, Dec. 1998, pp. 32-38, https://om.vuvb.uniza.sk/index.php/OM/article/view/104.