@article{MAT_1961_5_4_a2,
     author = {K. Fan},
     title = {Linear inequalities and closure properties in normed linear spaces},
     journal = {Matematika},
     pages = {117--122},
     publisher = {mathdoc},
     volume = {5},
     number = {4},
     year = {1961},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MAT_1961_5_4_a2/}
}