1. Global amphibian declines;Alford;Annual Review of Ecology and Systematics,1999
2. Arellano, L., Halffter, G., 2003. Gamma diversity: derived from and a determinant of alpha diversity and beta diversity. An analysis of three tropical landscapes. Acta Zoológica Mexicana 90, 27–76.
3. The measure of order and disorder in the distribution of species in fragmented habitat;Atmar;Oecologia,1993
4. The Nestedness Temperature Calculator: A Visual Basic Program Including 294 Presence Absence Matrices;Atmar,1995
5. Amphibians declines;Blaustein;Conservation Biology,1994