4 literature references for Papillidiopsis malesiana W. R. Buck & B. C. Tan, 1989 [1990]:

Author: Herzog
Year: 1909
Title:
Source: Beih. Bot. Centralbl.
Author: Brotherus
Year: 1895
Title:
Source: Bih. Kongl. Svenska Vetensk.-Akad. Handl.
Author: W. R. Buck & B. C. Tan
Year: 1989
Title:
Source: Acta Bryol. Asiat.
Author: Buck, W. R. & B. C. Tan
Year: 1989
Title: The Asiatic genera of Sematophyllaceae associated with ~Trichosteleum~
Source: Acta Bryol. Asiat.