@article{10_14708_ma_v2i2_1055,
     author = {R. Bartoszy\'nski},
     title = {O b{\l}\k{e}dach klasyfikacji},
     journal = {Mathematica Applicanda},
     pages = { 131--137},
     publisher = {mathdoc},
     volume = {2},
     number = {2},
     year = {1974},
     doi = {10.14708/ma.v2i2.1055},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/ma.v2i2.1055/}
}