@article{PORMA_1970__29_4_115125,
     author = {Hoppmann, A.G.},
     title = {Eine klassification der generalisierten kurven},
     journal = {Portugaliae mathematica},
     pages = {167--175},
     publisher = {mathdoc},
     volume = {29},
     number = {4},
     year = {1970},
     mrnumber = {0292037},
     zbl = {0215.51901},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/PORMA_1970__29_4_115125/}
}