@article{MASLO_1977__27_1_a5,
     author = {Zelinka, Bohdan},
     title = {On a problem of {R.} {Halin} concerning subgraphs of infinite graphs},
     journal = {Mathematica slovaca},
     pages = {43--45},
     publisher = {mathdoc},
     volume = {27},
     number = {1},
     year = {1977},
     mrnumber = {0465953},
     zbl = {0348.05112},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/MASLO_1977__27_1_a5/}
}