@incollection{SB_1960-1961__6__119_0,
     author = {Malgrange, Bernard},
     title = {\'Equations diff\'erentielles sans solutions},
     booktitle = {S\'eminaire Bourbaki : ann\'ees 1960/61, expos\'es 205-222},
     series = {S\'eminaire Bourbaki},
     note = {talk:213},
     pages = {119--125},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {6},
     year = {1961},
     mrnumber = {1611790},
     zbl = {0116.30101},
     language = {fr},
     url = {http://archive.numdam.org/item/SB_1960-1961__6__119_0/}
}