%0 Journal Article %A Mariano Giaquinta %A Enrico Giusti %T Differentiability of Minima of Non-Differentiable Functionals. %J Inventiones mathematicae %D 1983 %P 285 %V 72 %I mathdoc %U https://geodesic-test.mathdoc.fr/item/IM_1983__72_143021/ %G un %F IM_1983__72_143021