Yu, Xiaoniu, et al. “Biomineral Deposition of Magnesium Phosphates: Mixture of Mg3(PO4)2·22H2O and KMgPO4&Middot;6H2O”. Asian Journal of Chemistry, vol. 26, no. 21, Oct. 2014, pp. 7477-8, doi:10.14233/ajchem.2014.16952.