3 literature references for Pseudochorisodontium setschwanicum Gao Chien et al. in Gao Chien, Crosby & S. He, 1999:

Author: Crosby, M. R. and others - REVISED
Year: 1999
Title: REVISED: accepted in a monograph, revision, or descriptive flora since 1963
Source: Checklist Mosses
Author: Gao Chien, M. R. Crosby & S. He (editors)
Year: 1999
Title:
Source: Moss Fl. China
Author: Gao Chien et al. in Gao Chien, Crosby & S. He
Year: 1999
Title:
Source: Moss Fl. China