@article{10_14708_wm_v35i01_4805,
     author = {E. Mieloszyk and E. Sadowska and Z. Smentek},
     title = {Ryszard {Bittner} (1927-1998},
     journal = {Wiadomo\'sci Matematyczne},
     pages = { 183--187},
     publisher = {mathdoc},
     volume = {35},
     number = {01},
     year = {1999},
     doi = {10.14708/wm.v35i01.4805},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/wm.v35i01.4805/}
}