Brookhart,M.; Tucker,J.R.; Husk,G.R.
Journal of the American Chemical Society, 1983 , vol. 105, p. 258

Meshcheryakov,A.P. et al.
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1961 , # 1 p. 99 - 104
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1961 , # 1 p. 114 - 119

Lehmkuhl, Herbert; Fustero, Santos
Liebigs Annalen der Chemie, 1980 , # 9 p. 1361 - 1370