Colonge; Berthoux
Bulletin de la Societe Chimique de France, 1952 , p. 211

Bolestova, G. I.; Parnes, Z. N.
Journal of Organic Chemistry USSR (English Translation), 1987 , vol. 23, p. 32 - 36
Zhurnal Organicheskoi Khimii, 1987 , vol. 23, # 1 p. 38 - 43