Mahapatra (Chowdhury), Basabi, et al. “Reactions of Calcium Phosphate With Dihydrogen Calcium ,Ethylenediamine Tetraacetate ”. Asian Journal of Chemistry, vol. 9, no. 4, Mar. 2010, pp. 692-6, https://asianpubs.org/index.php/ajchem/article/view/23948.