Porto, F. G. M., M.C.A. Neto, and J.R.D. Finzer. “Solubility of Phosphate Rocks in Citric Acid”. World Scientific Research 5, no. 1 (December 17, 2018): 32–36. Accessed December 4, 2024. https://mail.asianonlinejournals.com/index.php/WSR/article/view/763.