Parra Almeida, I. , Roldan Bertucci, N. and Pereira de Lima, V. 2008. Variations of maximal inspiratory pressure and maximal expiratory pressure from residual functional capacity or total pulmonary capacity and residual volume in normal individuals: DOI: 10.15343/0104-7809.200832.2.7. O Mundo da Saúde. 32, 2 (Apr. 2008), 176–182.