“MOBILE-BASED ONLINE EXAM APPLICATIONS USING PROBLEM WEIGHT CLASSIFICATION TECHNIQUES, GROUPING AND RANDOMIZING: Aplikasi Ujian Online Berbasis Mobile Menggunakan Teknik Klasifikasi Bobot Soal, Pengelompokan Dan Pengacakan”, techno, vol. 17, no. 1, pp. 43–50, Mar. 2020, doi: 10.33480/techno.v17i1.1229.