Jafreen S, Mallick TS, Khan JA. Ellipsoidal mixture models for clustering: an application to web-based education data. Bangladesh J. Sci. Res. [Internet]. 2016 Jan. 4 [cited 2026 Mar. 23];28(1):1-7. Available from: https://www.banglajol.info/index.php/BJSR/article/view/26238