@Article{betboubre01,
  title = {$W^{1,p}$ estimates for solutions to the Ginzburg-Landau equation with boundary data in $H^{1/2}$},
  author = {F. Bethuel and J. Bourgain and H. Brezis and G. Orlandi},
  year = {2001},
  journal = {C.R. Acad. Sc. Paris Serie 1},
  volume = {333},
  number = {12},
  pages = {1069-1076},
  key = {Ginzburg-Landau equation}
}