Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{DCG_1994__11_3_131300, author = {Pavel Valtr}, title = {Unit {Squares} {Intersecting} {All} {Secants} of a {Square.}}, journal = {Discrete & computational geometry}, pages = {235--240}, publisher = {mathdoc}, volume = {11}, number = {3}, year = {1994}, zbl = {0799.52015}, url = {http://geodesic.mathdoc.fr/item/DCG_1994__11_3_131300/} }
Pavel Valtr. Unit Squares Intersecting All Secants of a Square.. Discrete & computational geometry, Tome 11 (1994) no. 3, pp. 235-240. http://geodesic.mathdoc.fr/item/DCG_1994__11_3_131300/