Volkov, A. N.; Volkova, K. A.; Levanova, E. P.; Trofimov, B. A.
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1981 , vol. 30, # 4 p. 612 - 615
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1981 , # 4 p. 831 - 834

Elvidge, John A.; Jones, Stephen P.; Peppard, Terence L.
Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1982 , p. 1089 - 1094

Volkova, K. A.; Levanova, E. P.; Nikol'skaya, A. N.; Volkov, A. N.; Trofimov, B. A.
Journal of Organic Chemistry USSR (English Translation), 1980 , vol. 16, # 7 p. 1187 - 1191
Zhurnal Organicheskoi Khimii, 1980 , vol. 16, # 7 p. 1382 - 1387

Elvidge, John A.; Jones, Stephen P.; Peppard, Terence L.
Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1982 , p. 1089 - 1094