Rumenov, Daniel, and Severina Vaskova. “MASS MEDIA RELATIONSHIP AND ITS SIGNIFICANCE FOR THE FINANCIAL STATUS OF THE MUSEUMS IN BULGARIA”. Challenges of Tourism and Business Logistics in the 21st Century, vol. 1, no. 1, Feb. 2018, pp. 121-34, https://js.ugd.edu.mk/index.php/YFNTS/article/view/2192.