Murthy; Wyrick; Voorstad; Hall
European Journal of Medicinal Chemistry, 1985 , vol. 20, # 6 p. 547 - 550

Bell; Briggs
Journal of the Chemical Society, 1941 , p. 282
Full Text Show Details
Warren; Briggs
Chemische Berichte, 1931 , vol. 64, p. 26,27