Петренко, В. П., Кісь, С. Я., & Ільницький, Д. Є. (2014). Comparative analysis of practices of development and scientific researches of tourism activities. Scientific Bulletin of Ivano-Frankivsk National Technical University of Oil and Gas (Series: Economics and Management in the Oil and Gas Industry), 1(9), 109–116. Retrieved from https://eung.nung.edu.ua/index.php/ecom/article/view/200