1. Scarpelli, E. M. 1968 The Surfactant System of the Lungs .Philadelphia:Lea & Febiger.
2. Aris, R. 1962 Vectors, Tensors and the Basic Equations for Fluid Mechanics .Prentice-Hall.
3. Yih, C.-S. 1968 Phys. Fluids,11,477.
4. Sakata, E. K. & Berg, J. C. 1969 I. & E. C. Fund. 8,570.
5. Sealy, G. R. 1972 M.Sc. thesis, Mechanics Dept.,The Johns Hopkins University.