Cremlyn, R. J.; Swinbourne, F. J.; Devlukia, P.; Shode, O.
Indian Journal of Chemistry, Section B: Organic Chemistry Including Medicinal Chemistry, 1984 , vol. 23, # 3 p. 249 - 253

Sprague; McBurney; Kissinger
Journal of the American Chemical Society, 1940 , vol. 62, p. 1714

Cremlyn, R. J.; Swinbourne, F. J.; Devlukia, P.; Shode, O.
Indian Journal of Chemistry, Section B: Organic Chemistry Including Medicinal Chemistry, 1984 , vol. 23, # 3 p. 249 - 253