交叉數不等式MR 1606052, doi:10.1007/BF01215922 (英语) . Pach, János; Radoičić, Radoš; Tardos, Gábor; Tóth, Géza, Improving the crossing lemma by finding more crossings in sparse
哥德尔奖CiteSeerX 10.1.1.21.1731 . doi:10.1006/game.1999.0790. Roughgarden, Tim; Tardos, Éva. How bad is selfish routing?. Journal of the ACM. 2002, 49 (2): 236–259