@article{articleae4a09d1,
title   = {Expiratory mechanics before and after uncomplicated heart surgery},
author = {Zin, W A and Caldeira, M P R and Cardoso, Wellington Veras and Auler Júnior, José Otávio Costa and Saldiva, Paulo Hilário Nascimento},
year = {1989},
journal   = {Chest}
}