%0 Journal Article %A Rektorys, Karel %T On application of direct variational methods to the solution of parabolic boundary value problems of arbitrary order in the space variables %J Czechoslovak Mathematical Journal %D 1971 %P 318-339 %V 21 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1971.101024/ %R 10.21136/CMJ.1971.101024 %G en %F 10_21136_CMJ_1971_101024