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@article{MZ_1977__154_172523, author = {G\"unter T\"orner}, title = {(rn-1, r) {Hjelmslev-Ebenen} des {Typs} n.}, journal = {Mathematische Zeitschrift}, pages = {189--202}, publisher = {mathdoc}, volume = {154}, year = {1977}, zbl = {0336.05015}, url = {http://geodesic.mathdoc.fr/item/MZ_1977__154_172523/} }
Günter Törner. (rn-1, r) Hjelmslev-Ebenen des Typs n.. Mathematische Zeitschrift, Tome 154 (1977), pp. 189-202. http://geodesic.mathdoc.fr/item/MZ_1977__154_172523/