@article{10_4064_ap_28_3_285_289,
     author = {I. Constantinescu and E. Tocaci and Tr. Noaghi},
     title = {Extension des relations de {Frenet} aux courbes \`a points irr\'eguliers},
     journal = {Annales Polonici Mathematici},
     pages = {285--289},
     publisher = {mathdoc},
     volume = {28},
     number = {3},
     year = {1973},
     doi = {10.4064/ap-28-3-285-289},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-28-3-285-289/}
}