@article{10_14708_wm_v13i1_1991,
     author = {E. Sikorski},
     title = {Przem\'owienie na otwarciu {X} {Zjazdu} {PTM}},
     journal = {Wiadomo\'sci Matematyczne},
     pages = { 74--78},
     publisher = {mathdoc},
     volume = {13},
     number = {1},
     year = {1971},
     doi = {10.14708/wm.v13i1.1991},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/wm.v13i1.1991/}
}