1. Gavrilov, E.I. and Gistzov, A.P. (1985) Seasonal migration of birds at foothills of Western Tien Shan Alma-Ata (in Russian).
2. Gavrilov, E.I. (1999) Monitoring of number of some species of birds of prey during autumn passage at foothills of Western Tien Shan. Selevinia, 1996-1997: 134-142 (in Russian with English summary).
BirdLife International (2020) Important Bird Areas factsheet: Chokpak Pass. Downloaded from
http://www.birdlife.org on 15/08/2020.