2 literature references for Stelligera stuposa stuposa (Ellis and Solander, 1786):

Author: Ellis, J.; Solander, D.
Year: 1786
Title: The Natural History of many curious and uncommon Zoophytes, collected from various parts of the Globe. Systematically arranged and described by the late Daniel Solander. 4.
Source: (Benjamin White & Son: London): 1-206, pls 1-63.
Author: Descatoire, A.
Year: 1969
Title: Les peuplements sessiles de l’Archipel de Glénande l’infralittoral rocheux. II. - Notes systématiques à propos de l’inventaire des Spongiaires.
Source: Vie et Milieu (A, Biologie Marine) 20(1-A): 9-30.