P. Johantgen

Nocturnal position in the Panamanian Golden Frog, Atelopus zeteki (Anura, Bufonidae), with notes on fluorescent pigment tracking

E. Lindquist, Scott A. Sapoznick, E. J. Rodriguez, 2007 .

Ohio Conservation Plan: Plains gartersnake, Thamnophis radix

G. Burghardt, M. Barrie, S. Butterworth, 2010 .