TY - JOUR AU - Teodor Atanacković AU - Manfred Achenbach TI - An extremum variational principle for Föppl-Hencky equation JO - Theoretical and applied mechanics PY - 1986 SP - 3 VL - 12 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TAM_1986_12_1_a0/ LA - en ID - TAM_1986_12_1_a0 ER -