Y. Wang, H. Guo, L. Chen, C. Xie, N. Zhou, Z. Fang, Synergistic Effect of Ca²⁺ and SO₄^2- Ions and Gypsum Scaling in Feed Solution on Forward Osmosis Boron Removal, Chemical Engineering Transactions. 66 (2018) 283-288. doi:10.3303/CET1866048.