@article{CMUC_1960_1_4_a3,
     author = {Van{\'\i}\v{c}ek, J.},
     title = {Biorthogonal systems and bases in {Banach} space {(Preliminary} note)},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {22--27},
     year = {1960},
     volume = {1},
     number = {4},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1960_1_4_a3/}
}