Kristina M. Sefc, Robert B. Payne, Michael D. Sorenson (2003): Phylogenetic relationships of African sunbird-like warblers: Moho (Hypergerus atriceps), Green Hylia (Hylia prasina) and Tit-hylia (Pholidornis rushiae) (PDF). Ostrich: Journal of African Ornithology. 74 (1–2): 8–17. doi:10.2989/00306520309485365
Per Alström, Urban Olsson, Fumin Lei: A review of the recent advances in the systematics of the avian superfamily Sylvioidea. Chinese Birds 2013, 4(2):99–131, DOI: 10.5122/cbirds.2013.0016, PDF
Silke Fregin, Martin Haase, Urban Olsson, Per Alström: New insights into family relationships within the avian superfamily Sylvioidea (Passeriformes) based on seven molecular markers. BMC Evolutionary Biology 12(1), 157, 2012. S. 1–12, DOI: 10.1186/1471-2148-12-157
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slu.se
pub.epsilon.slu.se
Per Alström, Urban Olsson, Fumin Lei: A review of the recent advances in the systematics of the avian superfamily Sylvioidea. Chinese Birds 2013, 4(2):99–131, DOI: 10.5122/cbirds.2013.0016, PDF
web.archive.org
Kristina M. Sefc, Robert B. Payne, Michael D. Sorenson (2003): Phylogenetic relationships of African sunbird-like warblers: Moho (Hypergerus atriceps), Green Hylia (Hylia prasina) and Tit-hylia (Pholidornis rushiae) (PDF). Ostrich: Journal of African Ornithology. 74 (1–2): 8–17. doi:10.2989/00306520309485365