Dr. Shashi Prabha Singh. “HYDRATION STUDIES OF SOME BLENDED PORTLAND CEMENTS”. INTERNATIONAL JOURNAL OF RESEARCH IN COMMERCE, IT, ENGINEERING AND SOCIAL SCIENCES ISSN: 2349-7793 Impact Factor: 6.876, vol. 4, no. 9, Sept. 2010, pp. 26-32, https://www.gejournal.net/index.php/IJRCIESS/article/view/550.