@article{10_21136_CMJ_1974_101211,
     author = {Bican, Ladislav},
     title = {A remark on projectively closed purities},
     journal = {Czechoslovak Mathematical Journal},
     pages = {1--4},
     publisher = {mathdoc},
     volume = {24},
     number = {1},
     year = {1974},
     doi = {10.21136/CMJ.1974.101211},
     mrnumber = {0347900},
     zbl = {0313.16029},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1974.101211/}
}