@article{seleem_el-inany_eid_mousa_hanafy_2006,  title={Complexation of some hydrazones bearing the quinoline ring: potentiometric studies},  volume={17},  ISSN={0103-5053},  url={https://doi.org/10.1590/S0103-50532006000400013},  DOI={10.1590/S0103-50532006000400013},  number={4},  journal={Journal of the Brazilian Chemical Society},  publisher={Sociedade Brasileira de Química},  author={Seleem, H. S. and El-Inany, G. A. and Eid, M. F. and Mousa, M. and Hanafy, F. I.},  year={2006},  month={Aug},  pages={723–729} }