Rasmi, Dilla Fajri, and Bukti Ginting. 2019. “OPERATOR-OPERATOR PADA HIMPUNAN LEMBUT KABUR HESITANT BERNILAI INTERVAL”. Jurnal Matematika UNAND 8 (1):40-48. https://doi.org/10.25077/jmu.8.1.40-48.2019.