@book{MSMF_1967__12__3_0,
     author = {Aubin, J.-P.},
     title = {Approximation des espaces de distributions et des op\'erateurs diff\'erentiels},
     series = {M\'emoires de la Soci\'et\'e Math\'ematique de France},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {12},
     year = {1967},
     doi = {10.24033/msmf.12},
     mrnumber = {37 #3172},
     zbl = {0157.21901},
     language = {fr},
     url = {http://archive.numdam.org/item/MSMF_1967__12__3_0/}
}