A. TAYIM, HASSAN, and ABDU S. SALAMEH. “Synthesis and Properties of Some Transition Metal Complexes of Schiff Base Derived from the Condensation of 2,6-Pyridinedicarboxaldehyde and 8-Aminoquinoline”. Asian Journal of Chemistry, vol. 19, no. 2, Mar. 2010, pp. 1423-9, https://asianpubs.org/index.php/ajchem/article/view/20265.