Martin
Annales de Chimie (Cachan, France), 1959 , vol. <13>1, p. 541,561

Gruenanger; Piozzi
Gazzetta Chimica Italiana, 1959 , vol. 89, p. 897,903

Cason
Journal of the American Chemical Society, 1942 , vol. 64, p. 1107
Journal of the American Chemical Society, 1946 , vol. 68, p. 2080
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Cason; Prout
Journal of the American Chemical Society, 1944 , vol. 66, p. 49
Org. Synth. Coll. Vol., 1955 , vol. III, p. 604

Matsuura
Bulletin of the Chemical Society of Japan, 1957 , vol. 30, p. 430