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Belen'kii,G.G. et al.
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Stepanov, A. A.; Rozhkov, I. N.
Doklady Chemistry, 1982 , vol. 267, p. 411 - 414
Dokl. Akad. Nauk SSSR Ser. Khim., 1982 , vol. 267, # 1 p. 106 - 109