1. Yasuda, M., Kawakami, K.: New method of monitoring remote wildlife via the Internet. Ecological Research 17, 119–124 (2002)
2. Nath, L.: Camera Trap in Conservation,
http://www.nfwf.org/AM/Template.cfm?Section=Home&TEMPLATE=/CM/ContentDisplay.cfm&CONTENTID=8749
3. http://www.panda.org/what_we_do/endangered_species/tigers/
4. http://www.iucnredlist.org/details/15955/0
5. Staving Off Extinction: A Decade of Investments to Save the World’s Last Wild Tigers (1995-2004),
http://www.nfwf.org/Content/ContentFolders/NationalFishandWildlifeFoundation/ConservationLibrary/ProgramEvaluations/Staving_off_Extinction.pdf