@article{RSMUP_1986__76__201_0,
     author = {Rzepecki, Bogdan},
     title = {On the existence of solutions of the {Darboux} problem for the hyperbolic partial differential equations in {Banach} spaces},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {201--206},
     publisher = {Seminario Matematico of the University of Padua},
     volume = {76},
     year = {1986},
     mrnumber = {881570},
     zbl = {0656.35087},
     language = {en},
     url = {http://www.numdam.org/item/RSMUP_1986__76__201_0/}
}