@incollection{MSMF_1974__38__89_0,
     author = {Gruman, Laurence},
     title = {Op\'erateurs diff\'erentiels d'ordre infini dans des espaces de fonctions enti\`eres},
     booktitle = {Journ\'ees de g\'eom\'etrie analytique (Poitiers, 1972)},
     series = {M\'emoires de la Soci\'et\'e Math\'ematique de France},
     pages = {89--97},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {38},
     year = {1974},
     doi = {10.24033/msmf.156},
     mrnumber = {50 #10785},
     zbl = {0293.32004},
     url = {http://www.numdam.org/articles/10.24033/msmf.156/}
}