Khan, M. A. and Caldas, E. C. (2001) “?CONDENSED BENZOPYRANS VI. 8H-PYRANO[3,2-j]QUINOXALINES”, Biological Sciences - PJSIR, 44(3), pp. 153–155. Available at: http://v2.pjsir.org/index.php/biological-sciences/article/view/1901 (Accessed: 22 November 2024).