Sultana, Sujala T, and M Ruhul Amin. “Aspen-Hysys Simulation Of Sulfuric Acid Plant”. Journal of Chemical Engineering 26, no. 1 (March 24, 2012): 47–49. Accessed April 15, 2025. https://banglajol.info/index.php/JCE/article/view/10182.