Open Mathematics
Open Mathematics > 2004 > 2 > 2 > 250-259
Open Mathematics > 2004 > 2 > 4 > 573-583
Open Mathematics > 2005 > 3 > 3 > 529-557
Open Mathematics > 2004 > 2 > 2 > 250-259
Open Mathematics > 2004 > 2 > 4 > 573-583
Open Mathematics > 2005 > 3 > 3 > 529-557