1. Federal University of Mato Grosso do Sul, INMA Campo Grande, Brazil.
2. ESALQ, University of S∼ao Paulo, Piracicaba, Brazil.
3. Federal University of Pernambuco, Recife, Brazil.
4. IST, University of Lisboa, Lisboa, Portugal.
5. ICEN, Federal University of Pará, Belém, Belem, Brazil.