Hopkins, Burt C. (University of Lille, France),Drummond, John J.
（2）
；Hopkins, Burt C. (University of Lille, France),Drummond, John J. (Fordham University, USA)
（2）
;Hopkins, Burt C. (University of Lille, France),De Santis, Daniele (Charles University, Czech Republic)
（1）
；Hopkins, Burt C. (University of Lille, France),De Santis, Daniele (Charles University, Czech Republic)
（1）
