@incollection{AST_2004__297__35_0,
     author = {Dubrovin, Boris},
     title = {On analytic families of invariant tori for {PDES}},
     booktitle = {Analyse complexe, syst\`emes dynamiques, sommabilit\'e des s\'eries divergentes et th\'eories galoisiennes (II)},
     editor = {Loday-Richaud Mich\`ele},
     series = {Ast\'erisque},
     pages = {35--65},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {297},
     year = {2004},
     mrnumber = {2135674},
     zbl = {1087.35083},
     language = {en},
     url = {http://archive.numdam.org/item/AST_2004__297__35_0/}
}