@incollection{MSMF_1972__31-32__127_0,
     author = {Da Prato, Giuseppe},
     title = {Quelques r\'esultats d'existence et r\'egularit\'e pour un probl\`eme non lin\'eaire de la th\'eorie du contr\^ole},
     booktitle = {Colloque d'analyse fonctionnelle (Bordeaux, 1971)},
     series = {M\'emoires de la Soci\'et\'e Math\'ematique de France},
     pages = {127--132},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {31-32},
     year = {1972},
     doi = {10.24033/msmf.73},
     mrnumber = {53 #12693},
     zbl = {0253.93015},
     url = {http://www.numdam.org/articles/10.24033/msmf.73/}
}