Sung Lim, Chang. “Fabrication and Characterization of SPION CaMoO4:Er3+, Yb3+ Composites by Cyclic Microwave-Assisted Metathetic Method”. Asian Journal of Chemistry, vol. 25, no. 16, Oct. 2013, pp. 8949-52, doi:10.14233/ajchem.2013.14929.