Sommer et al. Journal of the American Chemical Society, 1954 , vol. 76, p. 1609,1611 Journal of the American Chemical Society, 1957 , vol. 79, p. 2764,2768 Full Text Show Details Mironow et al. Doklady Akademii Nauk SSSR, 1955 , vol. 104, p. 865,867 Chem.Abstr., 1956 , p. 11234