3 literature references for Syntrichia pseudorobusta Zander, 1993:

Author: Jaeger
Year: 1872
Title:
Source: Ber. Thatigk. St. Gallischen Naturwiss. Ges.
Author: Crosby, M. R. and others - USED
Year: 1999
Title: USED in a checklist or nondescriptive flora, citing collections, since 1963
Source: Checklist Mosses
Author: Zander
Year: 1993
Title:
Source: Bull. Buffalo Soc. Nat. Sci.