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@article{MZ_1951__55_169255, author = {H. Hadwiger}, title = {Erg\"anzungsgleichheit k-dimensionaler {Polyeder.}}, journal = {Mathematische Zeitschrift}, pages = {292--298}, publisher = {mathdoc}, volume = {55}, year = {1951}, zbl = {0046.14004}, url = {http://geodesic.mathdoc.fr/item/MZ_1951__55_169255/} }
H. Hadwiger. Ergänzungsgleichheit k-dimensionaler Polyeder.. Mathematische Zeitschrift, Tome 55 (1951), pp. 292-298. http://geodesic.mathdoc.fr/item/MZ_1951__55_169255/