Institution: | 1. State University of Bahia Southwest , Campus of Itapetinga, P?a Primavera, 40, 45700-000, Itapetinga, Bahia, Brazil;2. IDMEC/IST, Technical University of Lisbon , Av. Rovisco Pais, 1049-001, Lisbon, Portugal;3. ICIST/IST, Technical University of Lisbon , Av. Rovisco Pais, 1049-001, Lisbon, Portugal;4. DEES/EE, Federal University of Minas Gerais , Av. do Contorno, 842, 2° andar, 3110-002, Belo Horizonte, MG, Brazil |