ПоловкаC. Г., and О. А. Половка. 2017. “Historical Cut of Natural Geographical Research Formation in Kharkiv Society of Naturalists in the Second Half of XIX – Early XX Century”. Visnyk of V. N. Karazin Kharkiv National University, Series "Geology. Geography. Ecology", no. 46 (November), 129-35. https://periodicals.karazin.ua/geoeco/article/view/9525.