%0 Journal Article %A Diaz, J.B. %A Payne, L.E. %T On a mean value theorem, and its converse, for the displacements in the theory of elasticity %J Portugaliae mathematica %D 1958 %P 123-126 %V 17 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/PORMA_1958__17_4_114806/ %G en %F PORMA_1958__17_4_114806