@article{AFM_2001_26_1_a10,
     author = {G. Alessandrini and M. Sigalotti},
     title = {Geometric properties of solutions to the anisotropic {p-Laplace} equation in dimension two},
     journal = {Annales Fennici Mathematici},
     pages = {249--266},
     publisher = {mathdoc},
     volume = {26},
     number = {1},
     year = {2001},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AFM_2001_26_1_a10/}
}