@article{JDM_1942__52_146300,
     author = {L. Vietoris},
     title = {Zur {Theorie} der {Integraphen.}},
     journal = {Jahresbericht der Deutschen Mathematiker-Vereinigung},
     pages = {71--74},
     publisher = {mathdoc},
     volume = {52},
     year = {1942},
     zbl = {68.0267.01},
     url = {http://geodesic.mathdoc.fr/item/JDM_1942__52_146300/}
}