2 literature references for Pseudomyxilla vitiazi Koltun, 1955:

Author: Van Soest, R.W.M.
Year: 2002
Title: Family Myxillidae Dendy, 1922.
Author: Koltun, V.M.
Year: 1955
Title: [New genera and species of sponges (Spongia,Cornacuspongida) from the Okhotsk and Bering Seas.] Trudÿ Zoologicheskogo Instituta.
Source: Akademiya Nauk SSSR. 18: 13-18, pl. 1 [InRussian].