Naves; Grampoloff; Bachmann Helvetica Chimica Acta, 1947 , vol. 30, p. 1599,1609 Full Text Show Details Bogert; Apfelbaum Science (Washington, DC, United States), 1934 , vol. 79, p. 280 Journal of the American Chemical Society, 1938 , vol. 60, p. 930,932 Full Text View citing articles Show Details Ruzicka; Seidel; Schinz Helvetica Chimica Acta, 1933 , vol. 16, p. 1143,1153