1. Arnberger, A., Brandenburg, C., Muhar, A. (Ed.), 2002. Monitoring and management of visitor flows in recreational and Protected areas. Conference Proceedings, January 30-February 2, 2002, Institute for Landscape Architecture and Landscape Management, Vienna, Austria.
2. Tourism Ecotourism and Protected Areas: the state of Nature-based Tourism Around the World and Guidelines for its Development;Ceballos-Lascurain,1996
3. Cihar, M., et al., 2003. Monitoring udrzitelneho turismu v centralni casti Narodniho parku Sumava. (Monitoring of sustainable tourism in central part of the Sumava National Park). Faculty of Science, Charles University, Prague, unpublished report.
4. Ukazatele udrzitelneho turismu v NP Podyji a hodnoceni jeho managementu ochranarskou verejnosti;Cihar;(Sustainable tourism indicators and public evaluation of the management in the Podyji/Thaya River Basin National Park.) Thayensia (Znojmo),2001
5. Narodni park Sumava a vybrane aspekty jeho udrzitelneho rozvoje – hodnoceni mistnimi obyvateli /obce Borova Lada, Horska Kvilda, Kvilda, Modrava, Filipova Hut, Srni a Prasily;Cihar;(The Sumava National Park and selected aspects of its sustainable development — evaluation by the local people /communities of Borova Lada, Horska Kvilda, Kvilda, Modrava, Filipova Hut, Srni a Prasily/.) Silva Gabreta,2000