Baumgarten, P.; Bruns, W. Ber. Dtsch. Chem. Ges., 1939 , vol. 72, p. 1753 - 1763 Full Text Show Details Baumgarten, P.; Bruns, W. Ber. Dtsch. Chem. Ges., 1941 , vol. 74, p. 1232 - 1236 Full Text Show Details Gmelin Handbook: B: B-Verb.13, 4.4, page 145 - 150