Miescher; Scholz Helvetica Chimica Acta, 1937 , vol. 20, p. 1237,1241 Full Text Show Details Schering-Kahlbaum A.G. Patent: US2033487 , 1933 ; Full Text Show Details Butenandt; Goergens Hoppe-Seyler's Zeitschrift fuer Physiologische Chemie, 1937 , vol. 248, p. 129,138 Full Text Show Details Inhoffen; Zuehlsdorff Chemische Berichte, 1941 , vol. 74, p. 1911,1916 Full Text Show Details David; de Jongh; Laqueur Archives Internationales de Pharmacodynamie et de Therapie, 1935 , vol. 51, p. 137,140 Full Text Show Details Schering-Kahlbaum A.G. Patent: DE641994 , 1932 ; Fortschr. Teerfarbenfabr. Verw. Industriezweige, vol. 22, p. 643