@article{10_14708_wm_v50i1_661,
     author = {Grzegorz Plebanek},
     title = {Piotr {Koszmider}},
     journal = {Wiadomo\'sci Matematyczne},
     pages = { 113--115},
     publisher = {mathdoc},
     volume = {50},
     number = {1},
     year = {2014},
     doi = {10.14708/wm.v50i1.661},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/wm.v50i1.661/}
}