[1] Leonard De Vinci Pole Univ, Res Ctr, Paris, France
[2] Indian Inst Technol Kharagpur, Dept Comp Sci & Engn, Kharagpur, West Bengal, India
[3] Univ Reading, Henley Business Sch, Henley On Thames RG9 3AU, Oxon, England
[4] Univ Bologna, Bologna, Italy
[5] TBS Business Sch, 1 Pl Alphonse Jourdain, F-31068 Toulouse, France