Article Takedown/Update Request

This is an update request for the document by Ling Yi, Ping Li, Lian-wen Qi and P. R. China

Your paper was deposited in CiteSeerX and appears online at http://or.nsfc.gov.cn/bitstream/00001903-5/119899/1/1000000802644.pdf
Before we are able to make any updates or deletions, you must ensure that the original record at this location is updated/removed.