Škvorc, Željko, J. Franjić, D. Krstonošić, and K. Sever. “Phytosociological Analysis of Beech Forests in the Žumberak and Samobor Highlands (Croatia)”. Hacquetia, vol. 20, no. 1, June 2020, pp. 119–165, doi:10.2478/hacq-2020-0013 .