2 literature references for Porcellionides asifensis (Verhoeff, 1938C):

Author: Schotte, M., B.F. Kensley, and S. Shilling.
Year: 1995
Title: nwards). World list of Marine, Freshwater and Terrestrial Crustacea Isopoda. National Museum of Natural History Smithsonian Institution: Washington D.C., USA.
Author: Verhoeff, K. W.
Year: 1938
Title: Ueber land-isopoden aus Marokko. Zoologischer Anzeiger 124:61-67.