Shigalevskii, V. A.; Chesnovskii, V. S.; Filippov, M. P.; Solomatin, G. G. Journal of Organic Chemistry USSR (English Translation), 1985 , p. 1373 - 1379 Zhurnal Organicheskoi Khimii, 1985 , vol. 21, # 7 p. 1506 - 1513