[1] Univ Liverpool, Management Sch, Chatham Bldg,Chatham St, Liverpool L69 7ZH, Merseyside, England
[2] Univ Liverpool, Dept Math Sci & Inst Risk & Uncertainty, Peach St, Liverpool L69 7ZL, Merseyside, England
[3] Monash Univ, Dept Econometr & Business Stat, Business Sch, Wellington Rd, Clayton, Vic 3800, Australia
[4] Coventry Univ, Ctr Financial & Corp Integr, Frederick Lanchester Bldg,Gosford St, Coventry CV1 5DD, W Midlands, England