nasim, hajra, M. YOUNAS, N. Feroz, and I. K. Swati. “Continuous Processing of Aloe Vera Juice in Reverse Osmosis Integrated Plant”. Journal of the Pakistan Institute of Chemical Engineers, vol. 40, no. 1, Sept. 2012, pp. 55-59, http://piche.org.pk/journal/index.php/jpiche/article/view/66.