@article{10_21136_CMJ_1963_100561,
     author = {Hor\'ak, Vladim{\'\i}r},
     title = {Les complexes lin\'eaires tangents des congruences de droites},
     journal = {Czechoslovak Mathematical Journal},
     pages = {166--188},
     publisher = {mathdoc},
     volume = {13},
     number = {2},
     year = {1963},
     doi = {10.21136/CMJ.1963.100561},
     mrnumber = {0154210},
     zbl = {0116.14001},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1963.100561/}
}