@article{10_4171_ifb_90,
     author = {Grigori I. Barenblatt and Juan Luis V\'azquez},
     title = {Nonlinear diffusion and image contour enhancement},
     journal = {Interfaces and free boundaries},
     pages = {31--54},
     year = {2004},
     volume = {6},
     number = {1},
     doi = {10.4171/ifb/90},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/ifb/90/}
}