note related to this contribution
| - Cornell University. Present address for J.W.: Polymer CoreTechnology, Corning Inc., Corning, NY 14831. Present address forH.K.: Institut für Chemie der Kunststoffe, MontanuniversitätLeoben, 8700 Leoben, Austria. Permanent address for K.C.: Department of Chemical Engineering, Seoul National University,Seoul 151-742, Korea.
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