@article{10_14708_wm_v24i01_3857, author = {. .}, title = {Zadania}, journal = {Wiadomo\'sci Matematyczne}, pages = { 107--109}, publisher = {mathdoc}, volume = {24}, number = {01}, year = {1982}, doi = {10.14708/wm.v24i01.3857}, language = {pl}, url = {http://geodesic.mathdoc.fr/articles/10.14708/wm.v24i01.3857/} }