@article{BSMF_1958__86__321_0,
     author = {Lions, Jacques-Louis},
     title = {\'Equations diff\'erentielles \`a coefficients op\'erateurs non born\'es},
     journal = {Bulletin de la Soci\'et\'e Math\'ematique de France},
     pages = {321--330},
     publisher = {Soci\'et\'e math\'ematique de France},
     volume = {86},
     year = {1958},
     doi = {10.24033/bsmf.1510},
     zbl = {0090.09903},
     language = {fr},
     url = {http://www.numdam.org/articles/10.24033/bsmf.1510/}
}