Ostrogorsky, A. G. "Aging of Polyurethane Foams," Sc.D. Thesis, Dept. of Mech. Eng., Massachusetts Institute of Technology (1985).
2.
Brandreth, D. A. and H. G. Ingersole. "Accelerated Aging of Rigid Polyurethane Foam," J. of Cellular Plastics, 16:235-238 (1980).
3.
Lee, W. M. and C. N. Brown. "Gas Permeability Determination in Urethane Foams," Journal of Thermal Insulation, 6:285-289 (1983).
4.
Reitz, D. W. "A Basic Study of Gas Diffusion in Foam Insulation," S. M. Thesis, Dept. of Mech. Eng., Massachusetts Institute of Technology (1983 ).
5.
Norton, F. J. "Diffusion of Chlorofluorocarbon Gases in Polymer Films and Foams," J. of Cellular Plastics, 18:300-318 (1982).
6.
Ostrogorsky, A. G., L. R. Glicksman and D. W. Reitz. "Aging of Polyurethane Foams," International Journal of Heat and Mass Transfer, 29:1169-1179 (1986 ).
7.
Valenzuela, J. A. and L. R. Glicksman. "Thermal Resistance and Aging of Rigid Urethane Foam Insulation," Proceedings of DOE-ORNL Workshop on Mathematical Modeling of Roofs, Atlanta, GA, CONF-811179, 261 (Nov. 3-4, 1981).
8.
Fox, T. "Aging in Closed-Cell Phenolic Foam;' S.M. Thesis, Dept. of Mech. Eng., Massachusetts Institute of Technology (1986 ).
9.
Kreith, F.Principles of Heat Transfer. International Textbook Company, Second Edition, pp. 92-96 (1967).
10.
Cuddihy, E. F. and J. Moacanin. "Diffusion of Gases in Polymetric Foams," Journal of Cellular Plastics, pp. 73-80 (February 1967).