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ISSN:0367-326X|71|6|693-696

Elsevier‎(2000)‎

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By VELIKOVA M.   MINKOVA L.   DAMYANOV D.   RANGELOV S.   in European Polymer Journal

ISSN:0014-3057|33|3|403-409

Elsevier‎(1997)‎

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