Nguembock, B. and Cruaud, C. 2016. Based on the molecular phylogeny of the genus Illadopsis, a very great genetic difference between sedentary populations of Illadopsis rufipennis resurrects the name Illadopsis extrema Bates, 1930. JOURNAL OF ADVANCES IN BIOLOGY. 9, 1 (Feb. 2016), 1725–1739. DOI:https://doi.org/10.24297/jab.v9i1.4224.