@article{RSMUP_1963__33__213_0,
     author = {Lions, J. L.},
     title = {Quelques remarques sur les \'equations diff\'erentielles op\'erationnelles du 1er ordre},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {213--225},
     publisher = {Seminario Matematico of the University of Padua},
     volume = {33},
     year = {1963},
     mrnumber = {156226},
     zbl = {0117.10201},
     language = {fr},
     url = {http://www.numdam.org/item/RSMUP_1963__33__213_0/}
}