TY - JOUR AU - P. Podio-Guidugli TI - Contact interactions, stress and material symmetry JO - Theoretical and applied mechanics PY - 2002 SP - 261 VL - 28-29 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.2298/TAM0229261P/ DO - 10.2298/TAM0229261P LA - en ID - 10_2298_TAM0229261P ER -