Search results for: Dengfeng Li
Applied Mathematics Letters > 2011 > 24 > 4 > 506-511
Chinese Annals of Mathematics, Series B > 2007 > 28 > 2 > 165-176
Applied Mathematics Letters > 2011 > 24 > 4 > 506-511
Chinese Annals of Mathematics, Series B > 2007 > 28 > 2 > 165-176