DUAN, JIN-CHUAN; WANG, YAZHEN; ZOU, JIAN - In: International Journal of Theoretical and Applied … 12 (2009) 03, pp. 359-391
It is well known that as the time interval between two consecutive observations shrinks to zero, a properly constructed GARCH model will weakly converge to a bivariate diffusion. Naturally the European option price under the GARCH model will also converge to its bivariate diffusion counterpart....