1. Abrams, M. E.: Isolation and quantitative estimation of pulmonary surface-active lipoprotein. J. appl. Physiol.21, 718 (1966).
2. Adams, F. H., andG. Enhörning: Surface properties of lung extracts. Acta physiol. scand.68, 23 (1966).
3. Boer, J. de, I. J. Hermans, andC. A. P. Bakker: Contribution of alveolar surface lining to lung mechanics. Acta Physiol pharmacol. neerl.14, 231 (1967).
4. A CIBA Foundation Symposium;J. A. Clements,1967
5. ?,D. F. Tierney, andH. J. Trahan: Influence of kinetic behavior of surface films on pulmonary elasticity. Physiologist6, 159 (1963).