@article{BSMF_1958__86__75_0,
     author = {Leray, Jean},
     title = {La solution unitaire d'un op\'erateur diff\'erentiel lin\'eaire. {(Probl\`eme} de {Cauchy.} {II.)}},
     journal = {Bulletin de la Soci\'et\'e Math\'ematique de France},
     pages = {75--96},
     publisher = {Soci\'et\'e math\'ematique de France},
     volume = {86},
     year = {1958},
     doi = {10.24033/bsmf.1499},
     mrnumber = {22 #12309},
     zbl = {0114.04903},
     language = {fr},
     url = {http://www.numdam.org/articles/10.24033/bsmf.1499/}
}