Robert K. Outlaw, Gary Voelker & Rauri C. K. Bowie: Shall we chat? Evolutionary relationships in the genus Cercomela (Muscicapidae) and its relation to Oenanthe reveals extensive polyphyly among chats distributed in Africa, India and the Palearctic. In: Molecular Phylogenetics and Evolution. Band55, Nr.1, 2010, S.284–292, doi:10.1016/j.ympev.2009.09.023.