1. ?The Science and Technology of Polymer Films,? Vol. II, p. 658, Wiley-Interscience, New York (1971).
2. ?Plastics Films,? p. 58, John Wiley, New York (1974).
3. E. I. du Pont de Nemours and Company, ?Summary of Properties of Kapton Polyimide Film,? Bulletin H-1A, Wilmington, Del. (undated).
4. and submitted for publication.