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@article{ELMA_1988__43_3_141440, author = {Hans Walser}, title = {Ein {Schliessungssatz} der {Elementargeometrie.}}, journal = {Elemente der Mathematik}, pages = {161--169}, publisher = {mathdoc}, volume = {43}, number = {3}, year = {1988}, zbl = {0707.51021}, url = {http://geodesic.mathdoc.fr/item/ELMA_1988__43_3_141440/} }
Hans Walser. Ein Schliessungssatz der Elementargeometrie.. Elemente der Mathematik, Tome 43 (1988) no. 3, pp. 161-169. http://geodesic.mathdoc.fr/item/ELMA_1988__43_3_141440/