@article{PMFA_1976__21_1_a4,
     author = {Otte, Michael},
     title = {Pozn\'amky k meziv\v{e}dn{\'\i}mu probl\'emu},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {44--47},
     publisher = {mathdoc},
     volume = {21},
     number = {1},
     year = {1976},
     language = {cz},
     url = {http://geodesic.mathdoc.fr/item/PMFA_1976__21_1_a4/}
}