Arvand, M., R. Shemshadi, N.A. Zeynalov, and A.A. Efondiov. 2010. “Application of Chemical Coagulants and Biopolymers for Sewage Sludge Dewatering”. Asian Journal of Chemistry 22 (8):6147-54. https://asianpubs.org/index.php/ajchem/article/view/11794.