1. Stonik, V.A., Morskie polyarnye steroidy, Russ. Chem. Rev. (Engl. Transl.), 2001, vol. 70, no. 8, p. 673.
2. Stonik, V.A., Ivanchina, N.V., and Kicha, A.A., Nat. Prod. Commun., 2008, vol. 3, no. 10, p. 1587.
3. Ivanchina, N.V., Kicha, A.A., and Stonik, V.A., Steroids, 2011, vol. 76, no. 5, p. 425.
4. Rashkes, Ya.V., Kicha, A.A., Levina, E.V., and Stonik, V.A., Chem. Nat. Compd., 1985, vol. 21, no. 3, p. 337.
5. Maier, M.S., Muniain, C., Haddad, R., and Eberlin, M.N., ARKIVOC, 2007, vol. 7, p. 301.