Fischer; Treibs; Hummel Hoppe-Seyler's Zeitschrift fuer Physiologische Chemie, 1929 , vol. 185, p. 42,53 Full Text Show Details Granick et al. Journal of Biological Chemistry, 1953 , vol. 202, p. 801,806 Full Text Show Details Willstaetter; Fischer Hoppe-Seyler's Zeitschrift fuer Physiologische Chemie, 1913 , vol. 87, p. 423,443,445,449,452