Etienne de Klerk John Maharry Dmitrii V. Pasechnik R. Bruce Richter Gelasio Salazar Improved Bounds for the Crossing Numbers of <i>K<sub>m, n</sub></i> and <i>K<sub>n</sub></i>. 189-202 2006 20 SIAM J. Discrete Math. 1 http://epubs.siam.org/SIDMA/volume-20/art_44274.html db/journals/siamdm/siamdm20.html#KlerkMPRS06