Berbeka, Jadwiga, Krzysztof Borodako, Katarzyna Klimek, Agata Niemczyk, and Renata Seweryn. 2017. “THE ROLE OF CONGRESS TOURISM IN CRACOW IN THE YEARS 2008-2009”. Tourism & Management Studies, January, 12-22. https://www.tmstudies.net/index.php/ectms/article/view/172.