@article{10_21136_CMJ_1967_100789,
     author = {N\'aden{\'\i}k, Zbyn\v{e}k},
     title = {Sur les courbes ferm\'ees dont l'indicatrice sph\'erique des derni\`eres normales est centr\'ee},
     journal = {Czechoslovak Mathematical Journal},
     pages = {447--459},
     publisher = {mathdoc},
     volume = {17},
     number = {3},
     year = {1967},
     doi = {10.21136/CMJ.1967.100789},
     mrnumber = {0218974},
     zbl = {0155.30302},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1967.100789/}
}