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Wenus-Danilowa
Zhurnal Obshchei Khimii, 1936 , vol. 6, p. 917,919
Chem. Zentralbl., 1936 , vol. 107, # II p. 3298
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Hauser et al.
Journal of the American Chemical Society, 1947 , vol. 69, p. 2649

Wenus-Danilowa
Zhurnal Obshchei Khimii, 1936 , vol. 6, p. 917,919
Chem. Zentralbl., 1936 , vol. 107, # II p. 3298

Ricart,G.; Couturier,D.
Bulletin de la Societe Chimique de France, 1976 , p. 569 - 576