Search results
Frontiers of Mathematics in China > 2009 > 4 > 4 > 697-719
Theoretical Computer Science > 2007 > 377 > 1-3 > 170-180
Information Sciences > 2006 > 176 > 6 > 676-690
Information Processing Letters > 2003 > 88 > 4 > 149-154
Frontiers of Mathematics in China > 2009 > 4 > 4 > 697-719
Theoretical Computer Science > 2007 > 377 > 1-3 > 170-180
Information Sciences > 2006 > 176 > 6 > 676-690
Information Processing Letters > 2003 > 88 > 4 > 149-154