C.S.Nagabhushana, H. R. A. S. H. , K. B. R. “Numerical Integration over Curved Domains Using Convex Quadrangulations And Gauss Legendre Quadrature Rules”. International Journal of Engineering and Computer Science, vol. 2, no. 11, Jan. 2018, http://ijecs.in/index.php/ijecs/article/view/2199.