%0 Journal Article %A Falk, Richard S. %T A Ritz method based on a complementary variational principle %J ESAIM: Mathematical Modelling and Numerical Analysis %D 1976 %P 39-48 %V 10 %N R2 %I Dunod %C Paris %U http://geodesic.mathdoc.fr/item/M2AN_1976__10_2_39_0/ %G en %F M2AN_1976__10_2_39_0