TY - JOUR AU - J. Bernis AU - P. Bettiol AU - C. Mariconda TI - Higher Order Problems in the Calculus of Variations: Du Bois-Reymond Condition and Regularity of Minimizers JO - Journal of convex analysis PY - 2020 SP - 179 EP - 204 VL - 27 IS - 1 UR - http://geodesic.mathdoc.fr/item/JCA_2020_27_1_JCA_2020_27_1_a11/ ID - JCA_2020_27_1_JCA_2020_27_1_a11 ER -