“Spectral Study of Pt (II), Cr (II) Polymeric Complexes of the Ligand N- Crotonyl -2- Hydroxy-Phenylazomethine”, alkej, vol. 9, no. 4, pp. 39–45, Dec. 2013, Accessed: Nov. 24, 2024. [Online]. Available: https://alkej.uobaghdad.edu.iq/index.php/alkej/article/view/183