Search results for: Yongfu Su
Open Mathematics > 2007 > 5 > 2 > 345-357
Central European Journal of Mathematics > 2007 > 5 > 2 > 345-357
Open Mathematics > 2007 > 5 > 2 > 345-357
Central European Journal of Mathematics > 2007 > 5 > 2 > 345-357