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15. Ivan Shopov, Ivan Panayotov and Otto Vogl, 31st
International Congress of Pure and Applied Chemistry, Sofia, Bulgaria,1987, Polymer News, 13(5), 156-159 (1988)
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15. Ivan Shopov, Ivan Panayotov and Otto Vogl, 31st
International Congress of Pure and Applied Chemistry, Sofia, Bulgaria,1987, Polymer News, 13(5), 156-159 (1988)
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