@article{MM2_1993__81_3-4_155887,
     author = {Gabriella Tarantello},
     title = {Multiplicity results for an inhomogeneous {Neumann} problem with critical exponent.},
     journal = {Manuscripta mathematica},
     pages = {57--78},
     publisher = {mathdoc},
     volume = {81},
     number = {3-4},
     year = {1993},
     zbl = {0831.35066},
     url = {http://geodesic.mathdoc.fr/item/MM2_1993__81_3-4_155887/}
}