@article{10_21136_CMJ_1955_100169,
     author = {Pt\'ak, Vlastimil},
     title = {Two remarks on weak compactness},
     journal = {Czechoslovak Mathematical Journal},
     pages = {532--545},
     publisher = {mathdoc},
     volume = {05},
     number = {4},
     year = {1955},
     doi = {10.21136/CMJ.1955.100169},
     mrnumber = {0082061},
     zbl = {0068.31604},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1955.100169/}
}