Spalona, Anna. “Visitor Awareness of Brown Bear (Ursus Arctos) Human-Food Conditioning in Bieszczady and Tatra National Parks (Carpathians, Poland)”. Biological Letters 49, no. 2 (April 13, 2013): 157–162. Accessed December 22, 2024. https://pressto.amu.edu.pl/index.php/BIOLET/article/view/v10120-012-0017-0.