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<ahref="https://plu.mx/plum/a/?doi=10.1007%2Fs13391-012-2004-3"data-popup="right"data-size="large"class="plumx-plum-print-popup"data-site="plum"data-hide-when-empty="true">Simple preparation of copolymer of styrene and 4-chloromethyl styrene and its application in NLO materials</a>