Voir la notice de l'article provenant de la source Heldermann Verlag
@article{JGG_2010_14_1_JGG_2010_14_1_a5, author = {A. Dvoretsky }, title = {Reflected {Surfaces} and {Their} {Directing} {Cones}}, journal = {Journal for geometry and graphics}, pages = {69--8}, publisher = {mathdoc}, volume = {14}, number = {1}, year = {2010}, url = {http://geodesic.mathdoc.fr/item/JGG_2010_14_1_JGG_2010_14_1_a5/} }
A. Dvoretsky . Reflected Surfaces and Their Directing Cones. Journal for geometry and graphics, Tome 14 (2010) no. 1, pp. 69-8. http://geodesic.mathdoc.fr/item/JGG_2010_14_1_JGG_2010_14_1_a5/