Scientific Approaches to Defining the Essence of Cross-border Market Tourist and Recreational Services. Economic journal of Lesya Ukrainka Volyn National University, [S. l.], v. 3, n. 7, p. 47–52, 2016. DOI: 10.29038/2411-4014-2016-03-47-52. Disponível em: https://echas.vnu.edu.ua/index.php/echas/article/view/294.. Acesso em: 14 may. 2024.