@article{10_14708_cm_v14i1_5696,
     author = {Z. Butlewski},
     title = {Th\'eor\`emes de comparison pour un syst\`eme d{\textquoteright}\'equations aux diff\'erences finies},
     journal = {Commentationes Mathematicae},
     pages = { 127--136},
     publisher = {mathdoc},
     volume = {14},
     number = {1},
     year = {1970},
     doi = {10.14708/cm.v14i1.5696},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/cm.v14i1.5696/}
}