P. João, G. Couto, P. Pimentel, and A. Oliveira, “Tourism activities and companies in a sustainable adventure tourism destination: the Azores”, Tour Manage Stud, vol. 14, no. 4, pp. 25–38, Oct. 2018, Accessed: Apr. 27, 2024. [Online]. Available: https://tmstudies.net/index.php/ectms/article/view/1118