@article{CMUC_1976__17_4_a10,
     author = {Kaufman, R.},
     title = {A nonlinear operator in potential theory},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {731--735},
     publisher = {mathdoc},
     volume = {17},
     number = {4},
     year = {1976},
     mrnumber = {0437927},
     zbl = {0352.35035},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1976__17_4_a10/}
}