The genetics of amphibian decline: population substructure and molecular differentiation in the Yosemite toad, Bufo canorus (Anura, Bufonidae) based on single-strand conformation polymorphism analysis (SSCP) and mitochondrial DNA sequence data - Shaffer, H. Bradley; Fellers, Gary; Magee, Allison; Voss, S. (Molecular Ecology, 2000)