@article{PORMA_1994__51_2_47165,
     author = {Micheletti, Anna Maria and Pistoia, Angela},
     title = {A multiplicity result for a class of superlinear elliptic problems.},
     journal = {Portugaliae mathematica},
     pages = {219--229},
     publisher = {mathdoc},
     volume = {51},
     number = {2},
     year = {1994},
     zbl = {0814.35038},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PORMA_1994__51_2_47165/}
}