Kostić, Olga, Snežana Jarić, Gordana Gajić, Dragana Pavlović, Milica Marković, Miroslava Mitrović, and Pavle Pavlović. 2016. “THE EFFECTS OF DOUGLAS FIR MONOCULTURE ON STAND CHARACTERISTICS IN A ZONE OF MONTANE BEECH FOREST”. Archives of Biological Sciences 68 (4):753-66. https://www.serbiosoc.org.rs/arch/index.php/abs/article/view/1247.