@article{ELMA_1992__47_3_141535,
     author = {Dieter Ruoff},
     title = {\"Uber die {L\"ange} der {Verbindungsstrecken} von zwei grenzparallelen {Geraden.}},
     journal = {Elemente der Mathematik},
     pages = {123--127},
     publisher = {mathdoc},
     volume = {47},
     number = {3},
     year = {1992},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/ELMA_1992__47_3_141535/}
}