M. Gh. A. E. AL-Dabbagh, M., and M. “Determination of PKa for Some Schiff Bases Derived from Benzaldehyde and Amino Phenols by Conductivity Measurement”. Journal of Education and Science (JES), vol. 27, no. 1, Mar. 2014, pp. 1-15, doi:10.33899/edusj.2014.161534.