@article{JRAM_1988__389_153046,
     author = {Gary M. Lieberman},
     title = {Oblique derivative problems in {Lipschitz} domains: {II.} {Discontinuous} boundary data.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {1--21},
     publisher = {mathdoc},
     volume = {389},
     year = {1988},
     zbl = {0648.35033},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1988__389_153046/}
}