@article{fathi_khattab_sadek_salama_2022,  title={The role of Preparation Technique on the Structure, Electrical Properties of Co<sub>x</sub>Zn<sub>1-x</sub>Fe<sub>2</sub>O<sub>4</sub> and its Electrocatalytic Effect on Hydrogen Evolution Reaction},  volume={25},  ISSN={1516-1439},  url={https://doi.org/10.1590/1980-5373-MR-2021-0449},  DOI={10.1590/1980-5373-MR-2021-0449},  journal={Materials Research},  publisher={ABM, ABC, ABPol},  author={Fathi, A.M. and Khattab, R.M. and Sadek, H.E.H. and Salama, A.H.},  year={2022},  pages={e20210449} }