This author has not been identified. Look up 'Paulo S. L. M. Barreto' in GoogleThis author has not been identified. Look up 'Patrick Longa' in GoogleThis author has not been identified. Look up 'Michael Naehrig' in GoogleThis author has not been identified. Look up 'Jefferson E. Ricardini' in GoogleThis author has not been identified. Look up 'Gustavo Zanon' in Google