Sultana, S, Z Yeasmin, S Ahmed, HP Nur, and PR Samaddar. “Characterization and Surface Activity of Soluble Sulfonated Butanone Formaldehyde Superplasticizer for Cement”. Bangladesh Journal of Scientific and Industrial Research 51, no. 2 (June 12, 2016): 155–158. Accessed December 22, 2024. https://banglajol.info/index.php/BJSIR/article/view/28113.