CHAIWUTTISAK, P. . .; SRINGAMDEE, T. . . The Development of a Recommender System for Online Travel Insurance by using Intuitionistic Fuzzy Sets based on Gray Relational Analysis. Creative Business and Sustainability Journal, Bangkok, Thailand, v. 43, n. 4, p. 1–19, 2021. Disponível em: https://so01.tci-thaijo.org/index.php/CBSReview/article/view/253693. Acesso em: 8 may. 2024.