@article{10_14708_wm_v16i01_3076,
     author = {. .},
     title = {Kr\'otkie informacje},
     journal = {Wiadomo\'sci Matematyczne},
     pages = { 117--118,},
     publisher = {mathdoc},
     volume = {16},
     number = {01},
     year = {1973},
     doi = {10.14708/wm.v16i01.3076},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/wm.v16i01.3076/}
}