@article{10_21136_CPM_1959_117305,
     author = {Jano\v{s}, Ludv{\'\i}k},
     title = {Souvislost spekter dvou krajov\'ych \'uloh},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky},
     pages = {375--377},
     publisher = {mathdoc},
     volume = {084},
     number = {3},
     year = {1959},
     doi = {10.21136/CPM.1959.117305},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPM.1959.117305/}
}