Omar, Abdalazeem, and Elmugdad Ali. “Potentiometric Studies on Complexes of Cr (â…¢) and Zr (IV)with Some Carboxylic Acids”. International Journal of Advanced Chemistry 3, no. 1 (April 5, 2015): 25–37. Accessed May 4, 2024. https://sciencepubco.com/index.php/IJAC/article/view/4372.