@Article{ 
  mug04a,
  author = { Mugnai, Dimitri },
  title = { Coupled Klein-Gordon and Born-Infeld type equations: looking for solitary waves },
  journal = { Proc. R. Soc. Lond. Ser. A Math. Phys. Eng. Sci. },
  year = { 2004 },
  volume = { 460 },
  pages = { 1519-1528 },
  URL = { http://cvgmt.sns.it/paper/293/ },
  note = { cvgmt preprint}
}