Plane-Sweep Algorithm of O(nlogn) for the Inclusion Hierarchy among Circles.

Deok-Soo Kim Byunghoon Lee Cheol-Hyung Cho Kokichi Sugihara Plane-Sweep Algorithm of O(nlogn) for the Inclusion Hierarchy among Circles. 53-61 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3045&spage=53 2004 conf/iccsa/2004-3 ICCSA (3) db/conf/iccsa/iccsa2004-3.html#KimLCS04