Ivanov, Ivaylo. “RETURN ON INVESTMENT FROM SHOPPING CENTRES GALLERIA STARA ZAGORA AND BURGAS PLAZA, BULGARIA: RETURN ON INVESTMENT FROM SHOPPING CENTRES GALLERIA STARA ZAGORA AND BURGAS PLAZA, BULGARIA”. JOURNAL SCIENTIFIC AND APPLIED RESEARCH 10, no. 1 (March 18, 2023): 62–71. Accessed November 7, 2024. https://jsar.ftn.shu.bg/index.php/jsar/article/view/207.