TY - JOUR AU - Delfour, Michel C. TI - Representations of hypersurfaces and minimal smoothness of the midsurface in the theory of shells JO - Control and Cybernetics PY - 2008 SP - 879 EP - 911 VL - 37 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/CC_2008_37_4_a7/ LA - en ID - CC_2008_37_4_a7 ER -