@article{10_1017_S0017089502001088,
     author = {BARLETTA, GIUSEPPINA and MARANO, SALVATORE A.},
     title = {SOME {REMARKS} {ON} {CRITICAL} {POINT} {THEORY} {FOR} {LOCALLY} {LIPSCHITZ} {FUNCTIONS}},
     journal = {Glasgow mathematical journal},
     pages = {131--141},
     year = {2003},
     volume = {45},
     number = {1},
     doi = {10.1017/S0017089502001088},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089502001088/}
}