Ianeva, Mariana, and Ralitsa Georgieva. “Reviewing the Conditions for Business Tourism in Bulgaria”. Mednarodno inovativno poslovanje = Journal of Innovative Business and Management 12, no. 1 (June 30, 2020): 35–40. Accessed August 18, 2025. http://journal.doba.si/OJS/index.php/jimb/article/view/2020-12-1-5.