TY - JOUR AU - Crampin, M. AU - Saunders, D. J. TI - Some concepts of regularity for parametric multiple-integral problems in the calculus of variations JO - Czechoslovak Mathematical Journal PY - 2009 SP - 741 EP - 758 VL - 59 IS - 3 UR - http://geodesic.mathdoc.fr/item/CMJ_2009_59_3_a13/ LA - en ID - CMJ_2009_59_3_a13 ER -