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Journal of Organic Chemistry USSR (English Translation), 1987 , vol. 23, # 10 p. 1895 - 1899
Zhurnal Organicheskoi Khimii, 1987 , vol. 23, # 10 p. 2146 - 2150

Journal of Organic Chemistry USSR (English Translation), , vol. 23, # 10 p. 1895 - 1899
Zhurnal Organicheskoi Khimii, , vol. 23, # 10 p. 2146 - 2150

Journal of Organic Chemistry USSR (English Translation), , vol. 23, # 10 p. 1895 - 1899
Zhurnal Organicheskoi Khimii, , vol. 23, # 10 p. 2146 - 2150

Journal of the American Chemical Society, , vol. 79, p. 5558,5562

Matveeva, E. D.; Tungusova, E. E.; Bundel',Yu. G.; Sagitullin, R. S.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1986 , vol. 22, # 12 p. 1334 - 1336
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Koyama, Junko; Sugita, Teruyo; Suzuta, Yukio; Irie, Hiroshi
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