@article{MOMA_1951__55_176871,
     author = {Kurt Hellmich},
     title = {Stetige und halbstetige {Punkt-Mengen-Funktionen.}},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {265--296},
     publisher = {mathdoc},
     volume = {55},
     year = {1951},
     zbl = {0044.04402},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1951__55_176871/}
}