Nightingale; Wadsworth
Journal of the American Chemical Society, 1947 , vol. 69, p. 1181
Journal of the American Chemical Society, 1945 , vol. 67, p. 416

Rosiak, Anna; Mueller, Ralf M.; Christoffers, Jens
Monatshefte fur Chemie, 2007 , vol. 138, # 1 p. 13 - 26

Nightingale; Wadsworth
Journal of the American Chemical Society, 1947 , vol. 69, p. 1181
Journal of the American Chemical Society, 1945 , vol. 67, p. 416