Barbier, J. P.; Kappenstein, C.; Hugel, R. (1972). "The Hydration Isomers of Chromium(III) Chloride". Journal of Chemical Education. 49 (3): 204. Bibcode:1972JChEd..49..204B. doi:10.1021/ed049p204.
Barbier, J. P.; Kappenstein, C.; Hugel, R. (1972). "The Hydration Isomers of Chromium(III) Chloride". Journal of Chemical Education. 49 (3): 204. Bibcode:1972JChEd..49..204B. doi:10.1021/ed049p204.