@article{JGG_2020_24_2_JGG_2020_24_2_a0,
     author = {H. Stachel},
     title = {Recalling {Thread} {Constructions} of {Quadrics}},
     journal = {Journal for geometry and graphics},
     pages = {143--157},
     year = {2020},
     volume = {24},
     number = {2},
     url = {http://geodesic.mathdoc.fr/item/JGG_2020_24_2_JGG_2020_24_2_a0/}
}