@article{M2AN_2007__41_3_461_0,
     author = {Di Marco, Silvia C. and Gonz\'alez, Roberto L. V.},
     title = {Numerical procedure to approximate a singular optimal control problem},
     journal = {ESAIM: Mathematical Modelling and Numerical Analysis },
     pages = {461--484},
     publisher = {EDP-Sciences},
     volume = {41},
     number = {3},
     year = {2007},
     doi = {10.1051/m2an:2007028},
     mrnumber = {2355708},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.1051/m2an:2007028/}
}