Morphological variation of Telmatobius atahualpai (Anura: Telmatobiidae) with comments on its phylogenetic relationships and synapomorphies for the genus
Journal article published in 2012 by
César Aguilar,
Alessandro Catenazzi,
Pablo J. Venegas 
,
Karen Siu-Ting
,
Karen Siu-Ting
Abstract
http://www.phyllomedusa.esalq.usp.br/articles/volume11/number1/1113749.pdf