Winterstein; Kueng Hoppe-Seyler's Zeitschrift fuer Physiologische Chemie, 1909 , vol. 59, p. 147 Full Text Show Details Neuberg; Silbermann Chemische Berichte, 1904 , vol. 37, p. 341 Hoppe-Seyler's Zeitschrift fuer Physiologische Chemie, 1905 , vol. 44, p. 146