“?SYNTHESIS OF HETERO-BICYCLIC COMPOUNDS Part-IX. Formation of 2,2-Disubstituted 4,5-Dioxo-Pyridino [4,3-D] [1,3]dioxins”. 1997. Biological Sciences - PJSIR 40 (5-12): 1-4. https://v2.pjsir.org/index.php/biological-sciences/article/view/2339.