Hyeon-seung Huh Yonsei University   Yonsei University School of Economics 50 Yonsei-ro, Seodaemun-gu Seoul, 120-749 Republc of Korea   hshuh@yonsei.ac.kr             JEL Areas: C5 : Econometric Modeling: General E3 : Prices, Business Fluctuations, and Cycles: General (includes Measurement and Data)