@article{JRAM_1994__454_153648,
     author = {C. Sbordone and T. Iwaniec},
     title = {Weak minima of variational integrals.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {143--162},
     year = {1994},
     volume = {454},
     zbl = {0802.35016},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1994__454_153648/}
}