@article{MOMA_1970__74_177493,
     author = {Gerhard Preu{\ss}},
     title = {Trennung und {Zusammenhang.}},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {70--87},
     publisher = {mathdoc},
     volume = {74},
     year = {1970},
     zbl = {0185.26003},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1970__74_177493/}
}