Fuzzy Preference Relations and Multiobjective Decision Making. - Petr Ekel; Carlos Augusto Paiva da Silva Martins; Cláudio Campos; Fernando H. Schuffner Neto; Reinaldo M. Palhares (WSTST, 2005)

Fuzzy preference modeling and its application to multiobjective decision making. - Petr Yakovlevitch Ekel; Marina Silva; Fernando H. Schuffner Neto; Reinaldo M. Palhares (Comput. Math. Appl., 2006)

Algorithms of discrete optimization and their application to problems with fuzzy coefficients. - Petr Yakovlevitch Ekel; Fernando H. Schuffner Neto (Inf. Sci., 2006)

Models and methods of decision making in fuzzy environment and their applications to power engineering problems. - Luciane N. Canha; Petr Ekel; J. Queiroz; Fernando H. Schuffner Neto (Numer. Linear Algebra Appl., 2007)

Fuzzy set based multicriteria decision making in power engineering problems. - Gladstone Barbosa Alves; Petr Yakovlevitch Ekel; Illya Kokshenev; Roberta O. Parreiras; Fernando H. Schuffner Neto; P. M. N. Souza (IFSA/NAFIPS, 2013)