@article{AFM_2005_30_2_a11,
     author = {Anna Zatorska-Goldstein},
     title = {Very weak solutions of nonlinear subelliptic equations},
     journal = {Annales Fennici Mathematici},
     pages = {407--436},
     publisher = {mathdoc},
     volume = {30},
     number = {2},
     year = {2005},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AFM_2005_30_2_a11/}
}