Lal, B., and P. K. Rastogi. “Microwave Assisted Synthesis of Chromium Substituted Nickel Ferrite Spinel for Oxygen Evolution Reaction”. Orbital: The Electronic Journal of Chemistry, Vol. 12, no. 3, Sept. 2020, pp. 154-9, https://periodicos.ufms.br/index.php/orbital/article/view/15739.