Manole, A., and A. Buiga. “AN OVERVIEW ON RECENT EVOLUTIONS IN EUROPEAN TOURISM - EVIDENCE FROM EU28, ROMANIA AND LUXEMBOURG”. Tourism International Scientific Conference Vrnjačka Banja - TISC, Vol. 3, no. 2, June 2018, pp. 81-98, https://www.tisc.rs/proceedings/index.php/hitmc/article/view/48.