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. "Synthesis of bis–indolylmethanes, tris–indolylmethanes and 3, 3'-diindolyloxindole derivatives using cellulose sulfuric acid as the biodegradable solid acid catalyst under heterogeneous condition". نشریه علمی پژوهشی دانشگاه آزاد اسلامی, 2, 2, 1389, 383-389.
. (1389). 'Synthesis of bis–indolylmethanes, tris–indolylmethanes and 3, 3'-diindolyloxindole derivatives using cellulose sulfuric acid as the biodegradable solid acid catalyst under heterogeneous condition', نشریه علمی پژوهشی دانشگاه آزاد اسلامی, 2(2), pp. 383-389.
. Synthesis of bis–indolylmethanes, tris–indolylmethanes and 3, 3'-diindolyloxindole derivatives using cellulose sulfuric acid as the biodegradable solid acid catalyst under heterogeneous condition. نشریه علمی پژوهشی دانشگاه آزاد اسلامی, 1389; 2(2): 383-389.