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@article{MAN_1897__48_157817, author = {Friedrich Schur}, title = {Ueber ebene einfache {Fachwerke}}, journal = {Mathematische Annalen}, pages = {142--194}, publisher = {mathdoc}, volume = {48}, year = {1897}, zbl = {27.0585.01}, url = {http://geodesic.mathdoc.fr/item/MAN_1897__48_157817/} }
Friedrich Schur. Ueber ebene einfache Fachwerke. Mathematische Annalen, Tome 48 (1897), pp. 142-194. http://geodesic.mathdoc.fr/item/MAN_1897__48_157817/