@article{RCM_1979__13_181676,
     author = {Rolf-Ingraban Riemer},
     title = {Eine {Verallgemeinerung} {Topologischer} {Mannigfaltigkeiten.}},
     journal = {Revista colombiana de matematicas},
     pages = {49--62},
     publisher = {mathdoc},
     volume = {13},
     year = {1979},
     zbl = {0471.57004},
     url = {http://geodesic.mathdoc.fr/item/RCM_1979__13_181676/}
}