@article{10_21136_CMJ_1968_100866,
     author = {N\'aden{\'\i}k, Zbyn\v{e}k},
     title = {Zur {Geometrie} im {Gro{\ss}en} der {Kugelkongruenzen}},
     journal = {Czechoslovak Mathematical Journal},
     pages = {700--717},
     publisher = {mathdoc},
     volume = {18},
     number = {4},
     year = {1968},
     doi = {10.21136/CMJ.1968.100866},
     mrnumber = {0238195},
     zbl = {0181.49303},
     language = {ge},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1968.100866/}
}