Semenov, V. P.; Mishin, M. A.; Ogloblin, K. A.
Journal of Organic Chemistry USSR (English Translation), 1988 , vol. 24, # 11 p. 2149 - 2153
Zhurnal Organicheskoi Khimii, 1988 , vol. 24, # 11 p. 2384 - 2388

Tsakotellis; Johnson; Skinner; Skidmore; Maibach
Journal of pharmaceutical sciences, 1971 , vol. 60, # 1 p. 84 - 89

Taskinen,E.
Tetrahedron, 1975 , vol. 31, p. 957 - 962