@article{10_21136_CMJ_1972_101108,
     author = {Gerlach, Eberhard},
     title = {On the characterization of weak closure in {Hilbert} space},
     journal = {Czechoslovak Mathematical Journal},
     pages = {368--372},
     publisher = {mathdoc},
     volume = {22},
     number = {3},
     year = {1972},
     doi = {10.21136/CMJ.1972.101108},
     mrnumber = {0324384},
     zbl = {0241.46021},
     language = {en},
     url = {https://geodesic-test.mathdoc.fr/articles/10.21136/CMJ.1972.101108/}
}