@article{10_21136_CMJ_1969_100933,
     author = {Mr\'owka, S.},
     title = {Characterization of classes of functions by {Lebesgue} sets},
     journal = {Czechoslovak Mathematical Journal},
     pages = {738--744},
     publisher = {mathdoc},
     volume = {19},
     number = {4},
     year = {1969},
     doi = {10.21136/CMJ.1969.100933},
     mrnumber = {0248291},
     zbl = {0199.44302},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1969.100933/}
}