A. Johnny S, Ibrahim Nasser H. A novel approach on neutrosophic crisp sets. QJPS [Internet]. 2018Sep.3 [cited 2026Jan.18];23(3):61 -69. Available from: https://www.journalsc.qu.edu.iq.51-77-64-103.cpanel.site/index.php/JOPS/article/view/891