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Zhurnal Organicheskoi Khimii, 1992 , vol. 28, # 4 p. 779 - 785

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Journal of Organic Chemistry USSR (English Translation), 1984 , p. 1595 - 1600
Zhurnal Organicheskoi Khimii, 1984 , vol. 20, # 8 p. 1749 - 1755