[1]
C. Quaisser, β€œOn the nomenclature of the Pale Blue Flycatcher Cyornis unicolor infuscatus E. Hartert, 1902 (Aves: Muscicapidae) with lectotype designation for Cyornis cyanopolia Blyth, 1870”, Zootaxa, vol. 2450, no. 1, pp. 65–67, May 2010.