2 literature references for Mammaster sigsbeei Perrier, 1894:

Author: Clark, A.M. and M.E. Downey.
Year: 1992
Title: Starfishes of the Atlantic. Chapman & Hall Identification Guides, 3. Chapman & Hall: London, UK. ISBN 0-412-43280-3. xxvi, 794 pp.
Author: Pawson, D. L., D. J. Vance, C. G. Messing, F. A. Solis-Marin, and C. L. Mah.
Year: 2009
Title: Echinodermata of the Gulf of Mexico,