@article{MM2_1995__87_4_156073,
     author = {Nicola Fusco and John E. Hutchinson},
     title = {A {Direct} proof for lower semicontinuity of polyconvex functionals.},
     journal = {Manuscripta mathematica},
     pages = {35--50},
     publisher = {mathdoc},
     volume = {87},
     number = {4},
     year = {1995},
     zbl = {0874.49015},
     url = {http://geodesic.mathdoc.fr/item/MM2_1995__87_4_156073/}
}