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@article{AM2_1993__45_2-3_137518, author = {Detlef Laugwitz}, title = {Regular hexagons in normed spaces and a theorem of {Walter} {Benz.}}, journal = {Aequationes mathematicae}, pages = {163--166}, publisher = {mathdoc}, volume = {45}, number = {2-3}, year = {1993}, zbl = {0785.46014}, url = {http://geodesic.mathdoc.fr/item/AM2_1993__45_2-3_137518/} }
Detlef Laugwitz. Regular hexagons in normed spaces and a theorem of Walter Benz.. Aequationes mathematicae, Tome 45 (1993) no. 2-3, pp. 163-166. http://geodesic.mathdoc.fr/item/AM2_1993__45_2-3_137518/