@article{COCV_2002__8__345_0,
     author = {Casas, Eduardo},
     title = {Error estimates for the numerical approximation of semilinear elliptic control problems with finitely many state constraints},
     journal = {ESAIM: Control, Optimisation and Calculus of Variations},
     pages = {345--374},
     publisher = {EDP-Sciences},
     volume = {8},
     year = {2002},
     doi = {10.1051/cocv:2002049},
     mrnumber = {1932955},
     zbl = {1066.49018},
     language = {en},
     url = {http://www.numdam.org/articles/10.1051/cocv:2002049/}
}