Shinde, B.L., L.A. Dhale, K.A. Ganure, and K.S. Lohar. 2017. “Variation in Elastic Properties of Holmium Substituted Nickel Copper Zinc Ferrites”. Asian Journal of Chemistry 29 (11):2531-35. https://doi.org/10.14233/ajchem.2017.20842.