@incollection{MSMF_1972__31-32__279_0,
     author = {Piriou, Alain},
     title = {Probl\`emes paraboliques et op\'erateurs pseudo-diff\'erentiels},
     booktitle = {Colloque d'analyse fonctionnelle (Bordeaux, 1971)},
     series = {M\'emoires de la Soci\'et\'e Math\'ematique de France},
     pages = {279--283},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {31-32},
     year = {1972},
     doi = {10.24033/msmf.93},
     mrnumber = {50 #7821},
     zbl = {0244.35076},
     url = {http://www.numdam.org/articles/10.24033/msmf.93/}
}