@article{AIHPC_1989__S6__151_0,
     author = {Butazzo, G. and Cavazzuti, E.},
     title = {Limit problems in optimal control theory},
     journal = {Annales de l'I.H.P. Analyse non lin\'eaire},
     pages = {151--160},
     publisher = {Gauthier-Villars},
     volume = {S6},
     year = {1989},
     mrnumber = {1019112},
     zbl = {0684.49006},
     language = {en},
     url = {http://www.numdam.org/item/AIHPC_1989__S6__151_0/}
}