SANEI, M.; DEHGHAN, R.; MAHMOODI RAD, A. THE IDENTIFICATION OF EFFICIENCY BY USING FUZZY NUMBERS. International Journal of Mathematical Modelling & Computations, [S. l.], v. 2, n. 1, p. 53–59, 2012. Disponível em: http://oiccpress.com/ijm2c/article/view/11143. Acesso em: 9 may. 2026.