1. Structure of guanylyl-3′,5′-cytidine monophosphate. II. Description of the molecular and crystal structure of the calcium derivative in space group P2₁ Hingerty, B.; Subramanian, E.; Stellman, Steven D.; Broyde, Suse B.; Sato, T.; Langridge, R. 1975 Articles BiochemistryBiophysicsGenetics