@article{10_14708_cm_v28i2_6244,
     author = {S. Schmidt},
     title = {Zwei {Existenzs\"atze} f\"ur gew\"ohnliche {Differentialgleichungen} in {Banachr\"aumen}},
     journal = {Commentationes Mathematicae},
     pages = { 345--353},
     publisher = {mathdoc},
     volume = {28},
     number = {2},
     year = {1989},
     doi = {10.14708/cm.v28i2.6244},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/cm.v28i2.6244/}
}