Nugroho, Heru Santoso Wahito, Handoyo Handoyo, Hadi Prayitno, and Arief Budiono. 2019. “Sort Elements Based on Priority, in Order to Improve the Quality of E-Learning in Health Using Difficulty-Usefulness Pyramid With Weighting (DUP-We)”. International Journal of Emerging Technologies in Learning (iJET) 14 (18):pp. 186-193. https://doi.org/10.3991/ijet.v14i18.10809.