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Broadley, D.G. and Wallach, V. 2007.

A review of East and Central African species of Letheobia Cope, revived from the synonymy of Rhinotyphlops Fitzinger, with descriptions of five new species  (Serpentes: Typhlopidae)

. Zootaxa. 1515, 1 (Jun. 2007), 31–68. DOI:https://doi.org/10.11646/zootaxa.1515.1.2.