[en] Trade Policy Reform in Developing Countries Since 1985 · A Review of the Evidence World Bank Publications

[de] Isaac Asimov’s Science Fiction Magazin 44 Wilhelm Heyne Verlag, München (Band 06/5196), 1994

[de] Isaac Asimov’s Science Fiction Magazin 43 Wilhelme Heyne Verlag, München (Band 06/5141), 1994

[de] Isaac Asimov's Science Fiction Magazin 25 Wilhelm Heyne Verlag, München (Band 06/4222), 1985