1. Adamson, I.Y.R., 1997. Development of the lung. In: Crystal, R.D., West, J.B., Weibel, E.R., Barnes, P.J. (Eds.), The Lung: Scientific Foundations. Lippincott-Raven, Philadelphia, pp. 993–1001.
2. A model for development and evolution of complex morphological structures;Atchley;Biol. Rev.,1991
3. Pressure profiles show features essential to aerodynamic valving in geese;Banzett;Respir. Physiol.,1991
4. Bellairs, R., Osmond, M., 1998. The Atlas of Chick Development. Academic Press, London.
5. The avian lung: is there an aerodynamic expiratory valve?;Brown;J. Exp. Biol.,1995