author = { Balàš, Martin AND Strasdas, Wolfgang Deutschland Umweltbundesamt },

title = { Sustainability in tourism developments, approaches and clarification of terms : paper },

publisher = {Umweltbundesamt},

keywords = { Forschungsbericht },

year = {2019},

booktitle = {Texte / Umweltbundesamt ; 2019, 53},

address = { Dessau-Roßlau },

url = { http://slubdd.de/katalog?TN_libero_mab2 }