Search results for: Guizhen Liu
Discrete Mathematics > 2008 > 308 > 9 > 1741-1748
Applied Mathematics Letters > 2007 > 20 > 12 > 1237-1243
Discrete Mathematics > 2008 > 308 > 9 > 1741-1748
Applied Mathematics Letters > 2007 > 20 > 12 > 1237-1243