Chinese Annals of Mathematics, Series B
Chinese Annals of Mathematics, Series B > 2008 > 29 > 2 > 207-222
Chinese Annals of Mathematics, Series B > 2008 > 29 > 2 > 179-198
Chinese Annals of Mathematics, Series B > 2008 > 29 > 2 > 147-154
Chinese Annals of Mathematics, Series B > 2008 > 29 > 2 > 113-120
Chinese Annals of Mathematics, Series B > 2008 > 29 > 2 > 155-164
Chinese Annals of Mathematics, Series B > 2008 > 29 > 2 > 199-206
Chinese Annals of Mathematics, Series B > 2008 > 29 > 2 > 121-134
Chinese Annals of Mathematics, Series B > 2008 > 29 > 2 > 165-178
Chinese Annals of Mathematics, Series B > 2008 > 29 > 2 > 135-146