http://www.caves.org/section/ccms/ccnl/ ... m#Tourists
G. Huppert, G., Burri, E., Forti, P., & Cigna A., 1994. Effects of Tourist Development on Caves and Karst, Cave Conservationist.13(3):
http://www.channelviewpublications.net/ ... 080116.pdf
Doorne, Stephen. Caves, Cultures and Crowds: Carrying Capacity Meets Consumer Sovereignty. School of Business and Public Management, Victoria University of Wellington. New Zealand
http://doc.govt.nz/Publications/004~Sci ... sfc095.pdf
Doorne, Stephen. 1995. Visitor experience at the Waitomo Glowworm Cave, Science for Conservation.
Hope this helps, Gustavo. --Andrew---[/url]