Ivanov, Sabin. “MODELLING OF GEOGRAPHICAL REALITY: MODELLING OF GEOGRAPHICAL REALITY”. JOURNAL SCIENTIFIC AND APPLIED RESEARCH 20, no. 1 (March 25, 2023): 33–39. Accessed November 7, 2024. https://jsar.ftn.shu.bg/ojs-3.3.0-7/index.php/jsar/article/view/302.