1.		Toward a produt-based typology for nature-based tourism: a conceptual framework / Julius Arnegger, Manuel Woltering, Hubert Job Autor: Arnegger, Julius Coautor: ; Woltering, Manuel Job, Hubert
2.		Developing a typology of sustainable protected area tourism products / Elias Butzmann and Hubert Job Autor: Butzmann, Elias Coautor: ; Job, Hubert