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@article{CM_1956-1958__13__113_0, author = {de Groot, J. and de Vries, H.}, title = {Convex sets in projective space}, journal = {Compositio Mathematica}, pages = {113--118}, publisher = {Kraus Reprint}, volume = {13}, year = {1956-1958}, mrnumber = {92167}, zbl = {0080.15402}, language = {en}, url = {http://geodesic.mathdoc.fr/item/CM_1956-1958__13__113_0/} }
de Groot, J.; de Vries, H. Convex sets in projective space. Compositio Mathematica, Tome 13 (1956-1958), pp. 113-118. http://geodesic.mathdoc.fr/item/CM_1956-1958__13__113_0/