Yi, X., Q. Rong, N. Xu, Y. Wang, and X. Wang. “Novel Ni(II) Coordination Compounds Containing Phenanthroline Derivatives and 3-Carboxy-1-Carboxymethyl-2-Oxidopyridinium: Synthesis, Structure, and Hirshfeld Analysis”. Bulletin of the Chemical Society of Ethiopia, vol. 41, no. 1, Nov. 2026, pp. 207-18, doi:10.4314/bcse.v41i1.14.