Nikitina 1977. [Calcareous Foraminifera of Upper Permian of South Primorye.] Ablaev, A.G.; Poyarkov, B.V.; Poyarkova, Z.N.[Eds]. Iskopaemaya flora i fauna dalnego vostoka i voprosy stratigrafii fanerozoya. [Fossil flora and fauna of the Soviet Far East and questions of Phanerozoic stratigraphy.], Acad. Sci. USSR, Far-East Science Centre, Vladivostok, 1977: 1-112. Chapter pagination: 27-52, 107-108