@article{JCA_1998_5_1_a2,
     author = {G. Treu},
     title = {An {Existence} {Result} for a {Class} of {Non} {Convex} {Problems} of the {Calculus} of {Variations}},
     journal = {Journal of convex analysis},
     pages = {031--044},
     publisher = {mathdoc},
     volume = {5},
     number = {1},
     year = {1998},
     url = {http://geodesic.mathdoc.fr/item/JCA_1998_5_1_a2/}
}