Mincheva, Stela, and Veselka Stoyanova. “RESEARCH ON THE IMPACT OF THE USER EXPERIENCE FOR THE SUCCESS OF A VIRTUAL PRODUCT: BULGARIAN TRAVEL AGENCY WEBSITES”. ENVIRONMENT. TECHNOLOGY. RESOURCES. Proceedings of the International Scientific and Practical Conference 2 (June 8, 2025): 237–241. Accessed July 14, 2025. https://journals23.rta.lv/index.php/ETR/article/view/8591.