Ruzicka et al. Helvetica Chimica Acta, 1932 , vol. 15, p. 431,1496 Helvetica Chimica Acta, 1934 , vol. 17, p. 426 Full Text Show Details Ruzicka et al. Helvetica Chimica Acta, 1933 , vol. 16, p. 314 Helvetica Chimica Acta, 1936 , vol. 19, p. 1391 Full Text Show Details Ruzicka; van Veen Hoppe-Seyler's Zeitschrift fuer Physiologische Chemie, 1929 , vol. 184, p. 76