@article{10_21136_CMJ_1961_100458,
     author = {Havelka, Josef},
     title = {\'El\'ement projectif lin\'eaire d'une hypersurface dans un espace \`a connexion projective},
     journal = {Czechoslovak Mathematical Journal},
     pages = {249--257},
     publisher = {mathdoc},
     volume = {11},
     number = {2},
     year = {1961},
     doi = {10.21136/CMJ.1961.100458},
     mrnumber = {0126788},
     zbl = {0103.15302},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1961.100458/}
}