El-Sayed , . S. S., and A. N. . Alhakimi. “Synthesis, Characterization of Lanthanum Mixed Ligand Complexes Based on Benzimidazole Derivative and the Effect of the Added Ligand on the Antimicrobial, and Anticancer Activities”. Journal of Qassim University for Science, vol. 15, Jan. 2022, pp. 35-53, https://jnsm.qu.edu.sa/index.php/jnm/article/view/2294.