Following Shimko (1993), a large amount of research has evolved around the problem of extracting risk neutral densities from options prices by interpolating the Black-Scholes implied volatility smile. Some of the methods recently proposed use variants of the cubic spline. These methods have the...

We develop an extension to the Obstfeld and Rogoff (1995, 1996) two-sector model with imperfect competition and nominal wage rigidities. Contrary to the Obstfeld and Rogoff (1995, 1996) analysis, we make an explicit account for the investment side of the two-sector economy. We analyze the...