Papanicolaou, N., and C. I. Christov. “GALERKIN SPECTRAL METHOD FOR HIGHER-ORDER BOUNDARY VALUE PROBLEMS ARISING IN THERMAL CONVECTION”. Ann. Sofia Univ. Fac. Math. and Inf. 94 (December 12, 2002): 71–83. Accessed November 24, 2024. https://stipendii.uni-sofia.bg/index.php/fmi/article/view/191.