@article{PMFA_1981_26_4_a4,
     author = {Kantorovi\v{c}, L. V, and Sobolev, S. L.},
     title = {Matematika v dne\v{s}n{\'\i} \v{s}kole},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {215--222},
     year = {1981},
     volume = {26},
     number = {4},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/PMFA_1981_26_4_a4/}
}