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@article{ELMA_1976__31_141166, author = {D. Ruoff and J. Shilleto}, title = {Das {Parallelenaxiom} im affinen {Raum.}}, journal = {Elemente der Mathematik}, pages = {9--14}, publisher = {mathdoc}, volume = {31}, year = {1976}, zbl = {0318.50007}, url = {http://geodesic.mathdoc.fr/item/ELMA_1976__31_141166/} }
D. Ruoff; J. Shilleto. Das Parallelenaxiom im affinen Raum.. Elemente der Mathematik, Tome 31 (1976), pp. 9-14. http://geodesic.mathdoc.fr/item/ELMA_1976__31_141166/