@article{AIF_1989__39_2_293_0,
     author = {Heinonen, Juha and Kilpel\"ainen, Terro and Martio, Olli},
     title = {Fine topology and quasilinear elliptic equations},
     journal = {Annales de l'Institut Fourier},
     pages = {293--318},
     publisher = {Institut Fourier},
     address = {Grenoble},
     volume = {39},
     number = {2},
     year = {1989},
     doi = {10.5802/aif.1168},
     mrnumber = {91b:31015},
     zbl = {0659.35038},
     language = {en},
     url = {http://archive.numdam.org/articles/10.5802/aif.1168/}
}