@article{10_21136_CMJ_1960_100411,
     author = {\v{S}vec, Alois},
     title = {Sur le probl\`eme de la stratification des congruences de droites},
     journal = {Czechoslovak Mathematical Journal},
     pages = {299--303},
     publisher = {mathdoc},
     volume = {10},
     number = {2},
     year = {1960},
     doi = {10.21136/CMJ.1960.100411},
     mrnumber = {0121735},
     zbl = {0091.34603},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1960.100411/}
}