Atmaram, Shiravanate; Forrester, Alexander R.; Gill, Melvyn; Napier, Russell J.; Thomson, Ronald H.
Acta Chemica Scandinavica, Series B: Organic Chemistry and Biochemistry, 1982 , vol. 36, # 9 p. 641 - 648

Hayashi; Hoshi
Yakugaku zasshi : Journal of the Pharmaceutical Society of Japan, 1967 , vol. 87, # 6 p. 651 - 653

Mischina; Efros
Zhurnal Obshchei Khimii, 1962 , vol. 32, p. 2217,2226; engl. Ausg. S. 2185, 2192

Mamalis; Petrow
Journal of the Chemical Society, 1950 , p. 703,705