Hustedt, F. (1922) Bacillariales aus Innerasien. Gesammelt von Dr. Sven Hedin. In: S. Hedin (ed.), Southern Tibet, discoveries in former times compared with my own researches in 1906-1908. Lithographic Institute of the General Staff of the Swedish Army, Stockholm, 6(3) 107-152, pls 9-10.