@article{JCA_2002_9_1_JCA_2002_9_1_a2,
     author = {A. Taheri},
     title = {On {Critical} {Points} of {Functionals} with {Polyconvex} {Integrands}},
     journal = {Journal of convex analysis},
     pages = {55--72},
     publisher = {mathdoc},
     volume = {9},
     number = {1},
     year = {2002},
     url = {http://geodesic.mathdoc.fr/item/JCA_2002_9_1_JCA_2002_9_1_a2/}
}