@article{10_21136_CPM_1959_108536,
     author = {Havel, V\'aclav},
     title = {O paraleln{\'\i}m pr\r{u}m\v{e}tu ortonorm\'aln{\'\i} base},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky},
     pages = {202},
     publisher = {mathdoc},
     volume = {084},
     number = {2},
     year = {1959},
     doi = {10.21136/CPM.1959.108536},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPM.1959.108536/}
}