The development of ski tourism in the light of idea of sustainable development : state of research
1644-3586
2083-3113
10.4467/20833113PG.15.013.4065
https://www.ejournals.eu/Prace-Geograficzne/Tom-2015/Numer-141/art/6010/
http://www.pg.geo.uj.edu.pl/documents/3189230/93085321/0141-art.08/df911242-2731-4adb-b3a9-aa74a13b66ca
2020-08-25