@article{AUPO_1976__15_1_a3,
     author = {Zeman, Ji\v{r}{\'\i}},
     title = {Eine {Bemerkung} zu einer {Aufgabe} von prof. {N.} {P.} {Erugin}},
     journal = {Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica},
     pages = {35--49},
     publisher = {mathdoc},
     volume = {15},
     number = {1},
     year = {1976},
     mrnumber = {0499387},
     zbl = {0383.34007},
     language = {ge},
     url = {http://geodesic.mathdoc.fr/item/AUPO_1976__15_1_a3/}
}