RADZIKOWSKA ANNA, M. Fuzzy Modal Operators and Their Applications. Journal of Automation, Mobile Robotics and Intelligent Systems, [S. l.], v. 11, n. 1, p. 10–20, 2017. DOI: 10.14313/JAMRIS_1-2017/2. Disponível em: https://www.jamris.org/index.php/JAMRIS/article/view/413.. Acesso em: 18 may. 2024.