Beyl, V.; Niederpruem, H.; Voss, P. Liebigs Annalen der Chemie, 1970 , vol. 731, p. 58 - 66 Full Text Show Details Gramstad, T.; Haszeldine, R. N. Journal of the Chemical Society, 1957 , p. 2640 - 2645 Full Text View citing articles Show Details Minnesota Mining & Manufg. Co. Patent: US2732398 , 1956 ; C.A., 1956 , p. 13982