Ana R. H. Reyna, Alex J. F. Farfán, Gabriel S. Ferrante, Institute of Mathematics and Computer Sciences, University of São Paulo - USP, Brazil; Geraldo P. Rocha Filho, State University of Southwest Bahia- Uesb, Brazil; Luis H. V. Nakamura Nakamura, Rodolfo I. Meneguette, Institute of Mathematics and Computer Sciences, University of São Paulo - USP, Brazil