@article{CMJ_2006__56_1_a5,
     author = {Grivaux, Sophie and Rycht\'a\v{r}, Jan},
     title = {Invariant subspaces of $X^{**}$ under the action of biconjugates},
     journal = {Czechoslovak Mathematical Journal},
     pages = {61--77},
     publisher = {mathdoc},
     volume = {56},
     number = {1},
     year = {2006},
     mrnumber = {2206287},
     zbl = {1164.47302},
     language = {en},
     url = {https://geodesic-test.mathdoc.fr/item/CMJ_2006__56_1_a5/}
}