Search results for: Yongqiang Zhao
Applied Mathematics Letters > 2006 > 19 > 7 > 647-651
Discrete Mathematics > 2005 > 305 > 1-3 > 394-399
Applied Mathematics Letters > 2006 > 19 > 7 > 647-651
Discrete Mathematics > 2005 > 305 > 1-3 > 394-399