@article{10_14708_cm_v17i1_5762,
     author = {K. Nowak},
     title = {On approximation of the solutions of linear differentia equations in {Banach} spaces by a difference proces},
     journal = {Commentationes Mathematicae},
     pages = { 187--199},
     publisher = {mathdoc},
     volume = {17},
     number = {1},
     year = {1973},
     doi = {10.14708/cm.v17i1.5762},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/cm.v17i1.5762/}
}