Sigel, H. and Prijs, B. (1975) “Ternary Complexes in Solution, XXII: Comparison of the Stability of 2,2’-Bipyridyl-Cu2+-1,2-Diaminobenzene with some Related Mixed-Ligand Complexes”, CHIMIA, 29(3), p. 134. doi:10.2533/chimia.1975.134.