@article{10_21136_CPM_1958_108634,
     author = {Jano\v{s}, Ludv{\'\i}k},
     title = {Principy aproximace funkcion\'al\r{u} line\'arn{\'\i}mi funkcion\'aly},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky},
     pages = {469--472},
     publisher = {mathdoc},
     volume = {083},
     number = {4},
     year = {1958},
     doi = {10.21136/CPM.1958.108634},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPM.1958.108634/}
}