Boyanov, Petar. “International Editorial Board of Vol. 15, 2019, Journal Scientific and Applied Research: International Editorial Board of Vol. 15, 2019, Journal Scientific and Applied Research”. JOURNAL SCIENTIFIC AND APPLIED RESEARCH 15, no. 1 (March 21, 2023). Accessed November 7, 2024. https://jsar.ftn.shu.bg/index.php/jsar/article/view/247.