IONCICĂ, M.; PETRESCU, E. C.; IONCICĂ, D. E. Innovations in Selling Tourism Products and Their Impact on the Efficiency of the Activity of Travel Agencies and Sustainability. International Journal of Economic Practices and Theories, [S. l.], v. 5, n. 5, p. 495-502, 2015. Disponível em: http://ijept.eu/index.php/ijept/article/view/Innovations_in_Selling_Tourism_Products_and_Their_Impact_on_th. Acesso em: 27 jul. 2026.