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@article{10_4064_cm_20_2_215_220, author = {D. A. Higgs}, title = {Matroids and duality}, journal = {Colloquium Mathematicum}, pages = {215--220}, publisher = {mathdoc}, volume = {20}, number = {2}, year = {1969}, doi = {10.4064/cm-20-2-215-220}, language = {en}, url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-20-2-215-220/} }
D. A. Higgs. Matroids and duality. Colloquium Mathematicum, Tome 20 (1969) no. 2, pp. 215-220. doi : 10.4064/cm-20-2-215-220. http://geodesic.mathdoc.fr/articles/10.4064/cm-20-2-215-220/
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