%0 Journal Article %A P. Podio-Guidugli %T Contact interactions, stress and material symmetry %J Theoretical and applied mechanics %D 2002 %P 261 - 276 %V 28-29 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/TAM_2002_28-29_1_a13/ %F TAM_2002_28-29_1_a13