@article{10_4171_ifb_68,
     author = {Pavel Krejc{\'\i} and J\"urgen Sprekels},
     title = {Parabolic regularization of differential inclusions and the stop operator},
     journal = {Interfaces and free boundaries},
     pages = {423--435},
     year = {2002},
     volume = {4},
     number = {4},
     doi = {10.4171/ifb/68},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/ifb/68/}
}