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Journal of Organic Chemistry USSR (English Translation), 1981 , vol. 17, p. 1926 - 1935
Zhurnal Organicheskoi Khimii, 1981 , vol. 17, # 10 p. 2161 - 2170
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Journal of Organic Chemistry USSR (English Translation), 1982 , p. 138 - 143
Zhurnal Organicheskoi Khimii, 1982 , vol. 18, # 1 p. 157 - 162