@article{lalonde-ijcv-09,
  Author =	 {Jean-Fran\c{c}ois Lalonde and Srinivasa
                  G. Narasimhan and Alexei A. Efros},
  Journal =	 {In submission, International Journal on Computer
                  Vision},
  Title =	 {What do the sun and the sky tell us about the
                  camera?},
  Year =	 2009
}