@article{10_4064_ap79_1_2,
     author = {Giuseppe Maria Coclite},
     title = {A multiplicity result
  for the {Schrodinger{\textendash}Maxwell} equations
  with negative potential},
     journal = {Annales Polonici Mathematici},
     pages = {21--30},
     publisher = {mathdoc},
     volume = {79},
     number = {1},
     year = {2002},
     doi = {10.4064/ap79-1-2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap79-1-2/}
}