@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://www.numdam.org/item/CM_1956-1958__13__113_0/}
}