Discussion paper DP5311 The Log of Gravity J.M.C Santos Silva Silvana Tenreyro 23 Oct 2005 International Macroeconomics International Trade and Regional Economics C13 C21 F10 F11 F12 F15
Discussion paper DP706 Ageing, Migration and Labour Mobility Klaus F. Zimmermann Rainer Winkelmann 30 Oct 1992 Human Resources C25 J10 J60