This author has not been identified. It may be one of the following persons: Look up 'João Filipe Ferreira' in GoogleThis author has not been identified. Look up 'David Portugal' in GoogleThis author has not been identified. Look up 'Maria Eduarda Andrada' in GoogleThis author has not been identified. Look up 'Pedro Machado' in GoogleThis author has not been identified. Look up 'Rui P. Rocha' in GoogleThis author has not been identified. Look up 'Paulo Peixoto' in Google