Husain, Asif, S.M. Hasan, Arvind Kumar, and M.M. Alam. 2016. “Synthesis and Biological Evaluation of 2-Arylidene-4-(4-Methoxy-phenyl)but-3-En-4-Olides”. Asian Journal of Chemistry 17 (3):1579-84. https://asianpubs.org/index.php/ajchem/article/view/14036.