“…The U-shaped pattern was, also, identified by the works of Hong and Wang (2000), Cheung et al (1994), Cheung (1995), Bildik (2001), Copeland andJones (2002) -Korea, Wood, McInish andOrd (1985), Jain and Joh (1988), Foster and Viswanathan (1993), Kleidon and Werner (1996), Abhyankar et al (1994), Hong and Wang (2000) and Ozenbas et al(2002).…”