Zhang, Changsen, Lei Yang, Qisheng Wu, and Juhua Luo. 2013. “Preparation and Characterization of the Conductive Co(1-x)NixFe2O4 Polypyrrole Microsphere Composites”. Asian Journal of Chemistry 25 (10):5732-34. https://doi.org/10.14233/ajchem.2013.OH77.