@article{ASNSP_1972_3_26_2_463_0,
     author = {Djedour, M.},
     title = {Existence and approximation of weak solutions of abstract differential equations},
     journal = {Annali della Scuola Normale Superiore di Pisa - Scienze Fisiche e Matematiche},
     pages = {463--478},
     publisher = {Scuola normale superiore},
     volume = {Ser. 3, 26},
     number = {2},
     year = {1972},
     mrnumber = {374586},
     zbl = {0263.34067},
     language = {en},
     url = {http://www.numdam.org/item/ASNSP_1972_3_26_2_463_0/}
}