@article{JCA_2006_13_1_JCA_2006_13_1_a2,
     author = {K. Zhang},
     title = {Estimates of {Quasiconvex} {Polytopes} in the {Calculus} of {Variations}},
     journal = {Journal of convex analysis},
     pages = {37--5},
     publisher = {mathdoc},
     volume = {13},
     number = {1},
     year = {2006},
     url = {http://geodesic.mathdoc.fr/item/JCA_2006_13_1_JCA_2006_13_1_a2/}
}