Bykova, N.K. & Veber, G.F. & Vyalov, O.S. & Korobkov, I.A. & Krishtofovich, A.N. & Lipman, R.Kh. & Mandelshtam, M.I. & Menner, V.V. & Pleshakov, I.B. & Rammelmayer, E.S. & Rohdendorf, B.B. & Ryabinin, A.N. & Subbotina, N.N. & Chernyshev, B.I. & Shulga-Nesterenko, M.I. & Yanishevsky, M.E. (1949)
Atlas of the Guide Forms of the Fossil Faunas of the USSR.[in russian]. Moscow: State Publishing House of Geological Literature