@INPROCEEDINGS{Mairal2008b,
  author = {Mairal, J. and Marius Leordeanu and Bach, F. and Martial Hebert
	and Ponce, J.},
  title = {Discriminative Sparse Image Models for Class-Specific Edge Detection
	and Image Interpretation},
  booktitle = {European Conference on Computer Vision},
  year = {2008},
}