A review of the status and biogeography of the lizard genera Celestus and Diploglossus (Squamata: Anguidae), with description of two new species from Costa Rica

by Savage, Jay M, Lips, Karen R
Published 1993

Morphological variation in the tropical anole, Anolis casildae (Squamata: Polychrotidae)

by Nicholson, Kirsten E, Ibáñez D., Roberto, Jaramillo, César A, Lips, Karen R
Published 2001