[1]
S. Mohamed, M. Khalifa, S. Sayed, A. Kamel, and M. Shalabi, “Removal of Lignin from Pulp Waste Water’s Black Liquor via By-Pass Cement Dust”, Eurasian Chem.-Technol. J., vol. 11, no. 1, pp. 51–59, Jan. 2009.