du Pont de Nemours and Co.
Patent: US2301231 , 1940 ;

Kazakov, A. I.; Lagodzinskaya, G. V.; Yunda, N. G.; Andrienko, L. P.; Korolev, A. M.; et al.
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1991 , vol. 40, # 10 p. 1966 - 1971
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Kazakov, A. I.; Lagodzinskaya, G. V.; Yunda, N. G.; Andrienko, L. P.; Korolev, A. M.; et al.
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1991 , vol. 40, # 10 p. 1966 - 1971
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1991 , # 10 p. 2248 - 2253

Eremenko,L.T.; Korolev,A.M.
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1968 , p. 2000 - 2002
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