Rheindt FE, Eaton JA. Species limits in Pteruthius (Aves: Corvida) shrike-babblers: a comparison between the Biological and Phylogenetic Species Concepts. Zootaxa [Internet]. 2009 Dec. 1 [cited 2025 Sep. 18];2301(1):29–54. Available from: https://www.mapress.com/zt/article/view/zootaxa.2301.1.2