Search results for: Qingqing Liu
Applied Mathematics Letters > 2012 > 25 > 10 > 1470-1474
Science China Mathematics > 2010 > 53 > 10 > 2733-2748
Applied Mathematics Letters > 2012 > 25 > 10 > 1470-1474
Science China Mathematics > 2010 > 53 > 10 > 2733-2748