3 literature references for Polytrichastrum altaicum Ignatov & G. L. S. Merrill, 1995:

Author: Brotherus
Year: 1895
Title:
Source: Bih. Kongl. Svenska Vetensk.-Akad. Handl.
Author: Bizot & Dury in Bizot
Year: 1974
Title:
Source: Rev. Bryol. Lichenol.
Author: Ignatov & G. L. S. Merrill
Year: 1995
Title:
Source: Arctoa