@article{SMJ2_1996_22_3_a8,
     author = {Degiovanni, M. and Lancelotti, S.},
     title = {Perturbations of {Critical} {Values} in {Nonsmooth} {Critical} {Point} {Theory}},
     journal = {Serdica Mathematical Journal},
     pages = {427--450},
     publisher = {mathdoc},
     volume = {22},
     number = {3},
     year = {1996},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SMJ2_1996_22_3_a8/}
}