@article{JRAM_1973__258_151292,
     author = {Thomas Donaldson},
     title = {Quotients, ranges, and normal solvability of maximal monotone operators.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {201--210},
     publisher = {mathdoc},
     volume = {258},
     year = {1973},
     zbl = {0246.47061},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1973__258_151292/}
}