@article{10_21136_CMJ_1989_102316,
     author = {Pa\'ul, Pedro J.},
     title = {New applications of {Pt\'ak's} extension theorem to weak compactness},
     journal = {Czechoslovak Mathematical Journal},
     pages = {454--458},
     publisher = {mathdoc},
     volume = {39},
     number = {3},
     year = {1989},
     doi = {10.21136/CMJ.1989.102316},
     mrnumber = {1006310},
     zbl = {0711.46015},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1989.102316/}
}