@Article{ 
  colguilor,
  author = { Colombo, Fabrizio and Guidetti, Davide and Lorenzi, Alfredo },
  title = { Elliptic equations in non-smooth plane domains with an application to a parabolic problem },
  journal = { Advances in Differential Equations },
  year = { 2002 },
  volume = { 7 },
  pages = { 695-716 },
  URL = { http://cvgmt.sns.it/paper/1324/ },
  note = { cvgmt preprint}
}