VLADIMIR ANGULO CASTILLO, ELDER JESUS VILLAMIZAR ROA, YURILEV CHALCO CANO, En: Colombia - Iranian Journal of Fuzzy Systems ISSN: 1735-0654 ed: Unisity of Sistan & Baluchistan v.17 fasc.N/A p.1 - 15 ,2020, DOI: 10.22111/IJFS.2020.5597