1. V. E. Pashinnik, G. M. Golubyshina, and V. A. Chuiguk, Ukr. Khim. Zh., 39, 1036 (1973).
2. V. M. Chernyshev, A. V. Astakhov, and Z. A. Starikova, Tetrahedron, 66, 3301 (2010).
3. A. V. Astakhov and V. M. Chernyshev, Khim. Geterotsikl. Soedin., 1416 (2010). [Chem. Heterocycl. Compd., 46, 1144 (2010)].
4. A. V. Astakhov and V. M. Chernyshev, Khim. Geterotsikl. Soedin., 1519 (2012). [Chem. Heterocycl. Compd., 48, 1417 (2012)].
5. V. M. Chernyshev, Chemical Sciences Doctoral Dissertation, Rostov-on-the-Don (2012); http://vak.ed.gov.ru/common/img/uploaded/files/CHernyshevVM.pdf .