Grishina, A. D.; Vannikov, A. V.; Degutis, Yu. A.; Myadyakshene, G. S.
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1985 , vol. 34, # 4 p. 757 - 760
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1985 , # 4 p. 835 - 838

Braverman; Cherkinsky; Kedrova; Reiselman
Tetrahedron Letters, 1999 , vol. 40, # 16 p. 3235 - 3238