%0 Journal Article %A G. Fairweather %A J.P. Johnson %T On the Extrapolation of Galerkin Methods for Parabolic Problems. %J Numerische Mathematik %D 1974 %P 269-288 %V 23 %I mathdoc %U http://geodesic.mathdoc.fr/item/NUMA_1974__23_132307/ %F NUMA_1974__23_132307