... Eliphas Nam Phi Ndou and 4/2010 ( S Thabo M Mokoena ( 2011) Anh Euro) 1999) OLS ( 2009) 1999-2008 20 3.1 c TBij,t = f ( qij,t, Yi,t , Yj,t ) - - qij,t ij,t ij,t - Eij,t - Pj - Pi - Yi,t - Yj,t - ... u v hi u Marcus Noland (1989) - ng cong J 16 1985 sau 16 qu quy Anju GuptaKapoor Johansen, and Uma - Ramakrish 1996 nan (1999) Andrew K Rose and cho giai Janet L Yellen (1989) song 19601985 ... Pj - Pi - Yi,t - Yj,t - ( ( Pj/Pi 21 Trong LnTBij,t = + 1LnYi,t + 2LnYj,t + vector (vector error correction model- (2), ( lnTB/ lnYi lnTB/ lnYj ln TB/ lnqij 3Lnqij,t + t (1) 22 3.2 y , R2 nh...