1. Alström , P. Biological or phylogenetic species Competing species concepts in ornithology Alula.
2. Blyth's Leaf Warbler Phylloscopus reguloides found breeding in Thailand;Alstrom;Forktail,1993
3. Anderson , J. 1871 On eight new species of birds from Western Yunan, China Proc. Zool. Soc. Lond. 213
4. The Chinese forms of Seicercus of the burkii form-circle;Bangs;Proc. New England Zool. Cl.,1929