1. 16 U.S.C. § 1533(b)(1)(A). The Endangered Species Act of 1973.
2. Geology of the American southwest: A Journey through Two Billion Years of Plate–Tectonic History;Baldridge,2004
3. The geomorphic evolution of the Rio Grande;Belcher;Baylor Geological Studies Bulletin,1975
4. Cryptic species as a window on diversity and conservation;Bickford;Trends in Ecology and Evolution,2007
5. Dispersal in freshwater invertebrates;Bilton;Annual Review of Ecology and Systematics,2001