@article{PORMA_1968__27_1_115059,
     author = {Zen{\'\i}sek, A.},
     title = {Convex sets in linear spaces},
     journal = {Portugaliae mathematica},
     pages = {55--62},
     publisher = {mathdoc},
     volume = {27},
     number = {1},
     year = {1968},
     mrnumber = {0273359},
     zbl = {0199.43704},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PORMA_1968__27_1_115059/}
}