
The World Bank, Washington, DC, USA
volume 38, number 5, 2003, page 232 to 259
Georg Koopmann, Ulrich Koester, Bernhard Brümmer, Bernard Hoekman, Marcelo Olarreaga, Jens van Scherpenberg, Heinz Hauser, Thomas A. Zimmermann, Stephen Woolcock, Welf Werner