%0 Journal Article %A Turnbull, C. %T On a Modification of Romberg Quadrature %J Canadian mathematical bulletin %D 1968 %P 217-224 %V 11 %N 2 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1968-025-x/ %R 10.4153/CMB-1968-025-x %F 10_4153_CMB_1968_025_x