Ruzicka et al. Helvetica Chimica Acta, 1934 , vol. 17, p. 426,430 Helvetica Chimica Acta, 1938 , vol. 21, p. 73,77 Full Text Show Details Ruzicka et al. Helvetica Chimica Acta, 1932 , vol. 15, p. 431,1496 Helvetica Chimica Acta, 1934 , vol. 17, p. 426