%0 Journal Article %A H. Marcinkowska %T Differentiability theorem for elliptic equations considered on a compact Riemannian manifold %J Colloquium Mathematicum %D 1964 %P 91-105 %V 12 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-12-1-91-105/ %R 10.4064/cm-12-1-91-105 %G en %F 10_4064_cm_12_1_91_105