@article{10_14708_cm_v30i1_6293,
     author = {M. Dawidowski and I. Kubiaczyk},
     title = {An existence theorem for the generalized hyperbolic equation \(z''_{xy} \in {F(x,} y, z)\) in {Banach} space},
     journal = {Commentationes Mathematicae},
     pages = { 41--49},
     publisher = {mathdoc},
     volume = {30},
     number = {1},
     year = {1990},
     doi = {10.14708/cm.v30i1.6293},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/cm.v30i1.6293/}
}