@article{10_14708_cm_v7i1_5486,
     author = {L. Szamko{\l}owicz},
     title = {Uwagi o charakteryzacji prostej w\'sr\'od graf\'ow na powierzchniach niezwartych},
     journal = {Commentationes Mathematicae},
     pages = { 11--18},
     publisher = {mathdoc},
     volume = {7},
     number = {1},
     year = {1962},
     doi = {10.14708/cm.v7i1.5486},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/cm.v7i1.5486/}
}