[1] Univ Kent, Ctr Quantitat Finance, Darwin Rd, Canterbury CT2 7NZ, Kent, England
[2] Univ Kent, Kent Business Sch, Darwin Rd, Canterbury CT2 7NZ, Kent, England
[3] Univ Strathclyde, Dept Accounting & Finance, 199 Cathedral St, Glasgow G4 OQU, Lanark, Scotland
[4] Univ Aberdeen, Kings Coll, Business Sch, Aberdeen AB24 3FX, Scotland
[5] Univ Vaasa, Sch Mkt & Commun, Vaasa, Finland