RDP 2003-06: The Characteristics and Trading Behaviour of Dual-Listed Companies Equation (4)

a r i,t j = r i,t j E( r i,t j ) MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaamyyaiaadk hadaqhaaWcbaGaamyAaiaacYcacaWG0baabaGaamOAaaaakiabg2da 9iaadkhadaqhaaWcbaGaamyAaiaacYcacaWG0baabaGaamOAaaaaki abgkHiTiaadweadaqadaqaaiaadkhadaqhaaWcbaGaamyAaiaacYca caWG0baabaGaamOAaaaaaOGaayjkaiaawMcaaaaa@493E@