Castro,B.
Bulletin de la Societe Chimique de France, 1967 , p. 1540 - 1547

Snyder; Putnam
Journal of the American Chemical Society, 1954 , vol. 76, p. 1893,1898

Jur'ew; Beljakowa
Zhurnal Obshchei Khimii, 1958 , vol. 28, p. 3,4;engl.Ausg.S.1,2

Hamell; Levine
Journal of Organic Chemistry, 1950 , vol. 15, p. 162,165

Andreev, S. A.; Lebedev, B. A.; Tselinskii, I. V.
Journal of Organic Chemistry USSR (English Translation), 1980 , vol. 16, # 7 p. 1166 - 1170
Zhurnal Organicheskoi Khimii, 1980 , vol. 16, # 7 p. 1360 - 1365