TY - JOUR AU - Hanno Rund TI - Integral Formulae Associated with the Euler-Lagrange Operators of Multiple Integral Problems in the Calculus of Variations. JO - Aequationes mathematicae PY - 1974 SP - 212 EP - 229 VL - 11 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/AM2_1974__11_136461/ ID - AM2_1974__11_136461 ER -