Hodgkin, D. C.; Pickworth, J.; Robertson, J. H.; Trueblood, K. N.; Prosen, R. J.; White, J. G. (1955). "Structure of Vitamin B12 : The Crystal Structure of the Hexacarboxylic Acid derived from B12 and the Molecular Structure of the Vitamin". Nature. 176 (4477): 325–8. Bibcode:1955Natur.176..325H. doi:10.1038/176325a0. PMID13253565.
Adams, M. J.; Blundell, T. L.; Dodson, E. J.; Dodson, G. G.; Vijayan, M.; Baker, E. N.; Harding, M. M.; Hodgkin, D. C.; Rimmer, B.; Sheat, S. (1969). "Structure of Rhombohedral 2 Zinc Insulin Crystals". Nature. 224 (5218): 491. Bibcode:1969Natur.224..491A. doi:10.1038/224491a0.
Hodgkin, D. C.; Pickworth, J.; Robertson, J. H.; Trueblood, K. N.; Prosen, R. J.; White, J. G. (1955). "Structure of Vitamin B12 : The Crystal Structure of the Hexacarboxylic Acid derived from B12 and the Molecular Structure of the Vitamin". Nature. 176 (4477): 325–8. Bibcode:1955Natur.176..325H. doi:10.1038/176325a0. PMID13253565.
Adams, M. J.; Blundell, T. L.; Dodson, E. J.; Dodson, G. G.; Vijayan, M.; Baker, E. N.; Harding, M. M.; Hodgkin, D. C.; Rimmer, B.; Sheat, S. (1969). "Structure of Rhombohedral 2 Zinc Insulin Crystals". Nature. 224 (5218): 491. Bibcode:1969Natur.224..491A. doi:10.1038/224491a0.
Hodgkin, D. C.; Pickworth, J.; Robertson, J. H.; Trueblood, K. N.; Prosen, R. J.; White, J. G. (1955). "Structure of Vitamin B12 : The Crystal Structure of the Hexacarboxylic Acid derived from B12 and the Molecular Structure of the Vitamin". Nature. 176 (4477): 325–8. Bibcode:1955Natur.176..325H. doi:10.1038/176325a0. PMID13253565.