MURESAN ML, POPA RA. TOURISM INDUSTRY EVOLUTION IN CASE OF BULGARIA AND ROMANIA. Studia UBB Negotia [Internet]. 2019 Dec. 30 [cited 2025 Jan. 10];64(4):51-78. Available from: https://studia.reviste.ubbcluj.ro/index.php/subbnegotia/article/view/2665