@article{RLIN_2001_9_12_4_a0,
     author = {Cingolani, Silvia and Vannella, Giuseppina},
     title = {Some results on critical groups for a class of functionals defined on {Sobolev} {Banach} spaces},
     journal = {Atti della Accademia nazionale dei Lincei. Rendiconti Lincei. Matematica e applicazioni},
     pages = {199--203},
     publisher = {mathdoc},
     volume = {Ser. 9, 12},
     number = {4},
     year = {2001},
     zbl = {1072.58005},
     mrnumber = {1785469},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RLIN_2001_9_12_4_a0/}
}