Hossain, M. A., S. anand, and Z. Ismail. “SYNTHESIS OF 5, 7-DIHYDROXY-6, 8-DI-C-PRENYL-4?-O-PRENYL-FLAVANONE”. Biological Sciences - PJSIR, vol. 47, no. 5, Oct. 2004, pp. 332-5, http://v2.pjsir.org/index.php/biological-sciences/article/view/1545.