Ricky Houghton
发表
Yanjun Qi,
Tobun Dorbin Ng,
Rong Jin,
2001,
TREC.
Ricky Houghton,
1999,
IEEE Intell. Syst..
Howard D. Wactlar,
Alexander G. Hauptmann,
Michael G. Christel,
2000,
CACM.