Madkour, H. M. F. “SIMPLE ONE-STEP SYNTHESES OF HETEROCYCLIC SYSTEMS FROM 2-PHENYL-4- THIENYLMETHYLIDENE-5(4H)-OXAZOLONE”. Biological Sciences - PJSIR, vol. 46, no. 2, Apr. 2003, pp. 81-87, https://v2.pjsir.org/index.php/biological-sciences/article/view/1599.