Morton, Howard E.; Leanna, M. Robert
Tetrahedron Letters, 1993 , vol. 34, # 28 p. 4481 - 4484

Zav"yalov, S.I.; Zavozin, A. G.
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1987 , vol. 36, # 8 p. 1663 - 1666
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1987 , # 8 p. 1796 - 1799

Zav"yalov, S.I.; Zavozin, A. G.
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1987 , vol. 36, # 8 p. 1663 - 1666
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1987 , # 8 p. 1796 - 1799