@article{MM2_1993__78_4_155794,
     author = {Gilles Carbou},
     title = {Regularity for a non linear variational problem in dimension two.},
     journal = {Manuscripta mathematica},
     pages = {37--56},
     publisher = {mathdoc},
     volume = {78},
     number = {4},
     year = {1993},
     zbl = {0787.58011},
     url = {http://geodesic.mathdoc.fr/item/MM2_1993__78_4_155794/}
}