Supriyadi E, Bonyah E. Open and distance learning: a bibliometric analysis using scopus database and vosviewer. Polyhedron Int. J. Math. Educ. [Internet]. 2023 Nov. 26 [cited 2026 Mar. 20];1(2):76-85. Available from: https://demo.aljibra.or.id/index.php/pijme/article/view/45