Massoud, Salah S., and Helmut Sigel. 1990. “Ternary Complexes in Solution: Intramolecular Stack Formation in Mixed Ligand Complexes Containing CuII, 2,2’ - Bipyridyl, and the 5’-Monophosphate of Inosine (IMP), Guanosine (GMP) O”. CHIMIA 44 (3): 55. https://doi.org/10.2533/chimia.1990.55.