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2.
The Upjohn Company, CPR Division, "Pellethane CPR 2103 Series."
3.
Goldwasser, D.S., Onder, K., Oertel, R.W., and Ehrlich, B.S., Society of Plastics Engineers, National Technical Conference, Detroit, MI (September 20, 1983).
4.
"Drying Thermoplastic Polyurethanes and Other Hygroscopic Polymers," D. S. G. Report No. 20, The Donald S. Gilmore Research Laboratories, The Upjohn Company, North Haven, CT 06473.
