Денисик, Г., and О. Антонюк. “SCIENTIFIC AND APPLIED GEOGRAPHICAL IMPORTANCE OF THE FORTIFICATION LANDSCAPES RESEARCH”. Bulletin of Taras Shevchenko National University of Kyiv. Military-Special Sciences, no. 1(36), July 2019, pp. 13-16, https://doi.org/10.17721/1728-2217.2017.36.13-16.