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@article{MZ_1993__212_4_174469, author = {G\"unter M. Ziegler}, title = {On the difference between real and complex arrangements.}, journal = {Mathematische Zeitschrift}, pages = {1--12}, publisher = {mathdoc}, volume = {212}, number = {4}, year = {1993}, zbl = {0789.57018}, url = {http://geodesic.mathdoc.fr/item/MZ_1993__212_4_174469/} }
Günter M. Ziegler. On the difference between real and complex arrangements.. Mathematische Zeitschrift, Tome 212 (1993) no. 4, pp. 1-12. http://geodesic.mathdoc.fr/item/MZ_1993__212_4_174469/