@article{MM2_1990__68_2_155524,
     author = {Luigi Ambrosio},
     title = {Existence of minimal energy configurations of nematic liquid crystals with variable degree of orientation.},
     journal = {Manuscripta mathematica},
     pages = {215--228},
     publisher = {mathdoc},
     volume = {68},
     number = {2},
     year = {1990},
     zbl = {0713.49005},
     url = {http://geodesic.mathdoc.fr/item/MM2_1990__68_2_155524/}
}