Tyas, M., Kurnia, A. and Soleh, A. (2022) “TEXT CLUSTERING ONLINE LEARNING OPINION DURING COVID-19 PANDEMIC IN INDONESIA USING TWEETS”, BAREKENG: Jurnal Ilmu Matematika dan Terapan, 16(3), pp. 939-948. doi: 10.30598/barekengvol16iss3pp939-948.