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2.
Richard Chan and Masao Nakamura, "Mechanical Properties of Plastic Foams ", J. of Cell. Plast. March/April, 1969.
3.
S.V. Kanakkanatt , "Mechanical Properties of Open-Cell Foams", J. of Cell. Plast., January/February, 1973.
4.
P.J. Phillips and N.R. Waterman, "The Mechanical Properties of High Density Rigid Polyurethane Foams in Compressions," Poly. Eng. and Sci. January, 1974, Vol. 14, No. 1.
5.
J.C. Halpin and R.L. Thomas, "Ribbon Reinforcement ofComposites", J. of Comp. Matls., Vol. 2, No. 4, October, 1968 .
6.
J.E. Ashton, J.C. Halpin and P.H. Petit, "Primer on Composite Materials: Analysis", Technomic Publishing Co., Westport, Conn., 1969, Chapter 5.