@misc{10_21136_CPM_1958_108630, title = {Zpr\'avy}, journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky}, pages = {499--504}, year = {1958}, volume = {83}, number = {4}, doi = {10.21136/CPM.1958.108630}, language = {cs}, url = {http://geodesic.mathdoc.fr/articles/10.21136/CPM.1958.108630/} }