@article{10_14708_wm_v7i1_2387,
     author = {E. Piegat},
     title = {O \'srednicach figur wypuk{\l}ych p{\l}askich},
     journal = {Wiadomo\'sci Matematyczne},
     pages = { 51--56},
     publisher = {mathdoc},
     volume = {7},
     number = {1},
     year = {1963},
     doi = {10.14708/wm.v7i1.2387},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/wm.v7i1.2387/}
}