Effective Lower Bounds for Crossing Number, Bisection Width and Balanced Vertex Separator in Terms of Symmetry.

Farhad Shahrokhi László A. Székely Effective Lower Bounds for Crossing Number, Bisection Width and Balanced Vertex Separator in Terms of Symmetry. 102-113 1992 conf/ipco/1992 IPCO db/conf/ipco/ipco1992.html#ShahrokhiS92