@article{10_21136_CMJ_1959_100352,
     author = {\v{C}ech, Eduard},
     title = {Compl\'ements au m\'emoire: {D\'eformation} projective des congruences $W$},
     journal = {Czechoslovak Mathematical Journal},
     pages = {289--296},
     publisher = {mathdoc},
     volume = {09},
     number = {2},
     year = {1959},
     doi = {10.21136/CMJ.1959.100352},
     mrnumber = {0133753},
     zbl = {0131.37302},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1959.100352/}
}