@article{GDZPPN000365122, title = {Almost Tight Bounds for e-Nets.}, journal = {Discrete \& computational geometry}, volume = {7}, year = {1992}, pages = {163-174}, zbl = {0765.68209}, url = {http://dml.mathdoc.fr/item/GDZPPN000365122} }
Woeginger, G.; Komlós, J.; Pach, J. Almost Tight Bounds for e-Nets.. Discrete & computational geometry, Tome 7 (1992) pp. 163-174. http://gdmltest.u-ga.fr/item/GDZPPN000365122/