Open Mathematics
Open Mathematics > 2003 > 1 > 2 > 184-197
Open Mathematics > 2004 > 2 > 1 > 112-122
Open Mathematics > 2004 > 2 > 2 > 218-249
Open Mathematics > 2003 > 1 > 2 > 184-197
Open Mathematics > 2004 > 2 > 1 > 112-122
Open Mathematics > 2004 > 2 > 2 > 218-249