@Article{ 
  CabCin10,
  author = { Cabré, Xavier and Cinti, Eleonora },
  title = { Energy estimates and 1-D symmetry for nonlinear equations involving the half-Laplacian },
  journal = { Discrete Contin. Dyn. Syst. },
  year = { 2010 },
  volume = { 28 },
  number = { 3 },
  pages = { 1179--1206 },
  URL = { http://cvgmt.sns.it/paper/1913/ },
  note = { cvgmt preprint}
}