IEEE Transactions on Knowledge and Data Engineering
IEEE Transactions on Knowledge and Data Engineering > 2006 > 18 > 6 > 857 - 861
IEEE Transactions on Knowledge and Data Engineering > 2006 > 18 > 9 > 1225 - 1238
IEEE Transactions on Knowledge and Data Engineering > 2006 > 18 > 11 > 1512 - 1525