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2.
D.D. O'Rell and A. Patel, 24th International Wire and Cable Symposium, November 18-20, 1975, p. 231.
3.
a) D.A. Gordon , "Stabilization of Polymers," in Advances in Chemistry Series, No. 85, American Chemical Society, 1968. p. 225.
4.
b) B.D. Gesner, J.W. Shea and F.R. Wight, 22nd International Wire and Cable Symposium, December 4-6, 1973, p. 7. c) J.B. Howard and H.M. Gilroy, Polymer Eng. and
