@article{FORUM_1993__5_3_141711,
     author = {Zvi Artstein},
     title = {Chattering variational limits of control systems.},
     journal = {Forum mathematicum},
     pages = {369--404},
     publisher = {mathdoc},
     volume = {5},
     number = {3},
     year = {1993},
     zbl = {0780.49012},
     url = {http://geodesic.mathdoc.fr/item/FORUM_1993__5_3_141711/}
}