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Sosnovskii, G. M. Astapovich, I. V. Journal of Organic Chemistry USSR (English Translation), 1990 , vol. 26, # 4 p. 781 Zhurnal Organicheskoi Khimii, 1990 , vol. 26, # 4 p. 911 - 912
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Rothstein Bulletin de la Societe Chimique de France, 1935 , vol. <5>2, p. 1939 Full Text Show Details Koelsch McElvain Journal of the American Chemical Society, 1930 , vol. 52, p. 1164,1168