@article{JGG_2020_24_2_JGG_2020_24_2_a9,
     author = {S. Ouarab and A. O. Chahdi and M. Izid },
     title = {Ruled {Surface} {Generated} by a {Curve} {Lying} on a {Regular} {Surface} and its {Characterizations}},
     journal = {Journal for geometry and graphics},
     pages = {257--267},
     publisher = {mathdoc},
     volume = {24},
     number = {2},
     year = {2020},
     url = {http://geodesic.mathdoc.fr/item/JGG_2020_24_2_JGG_2020_24_2_a9/}
}