Koyama, Yoji. ( w 3 rekordach )
- Yoji Koyama.
- Kp. The transition to a market economy in the successor states of former Yugoslavia / Yoji Koyama. - Budapest, 2003.
- The EU's eastward enlargement : Central and Eastern Europe's strategies for development / Koyama, Yoji.
- The eurozone enlargement : prospect of new EU member states for Euro adoption /
- Transition, European integration and foreign direct investment in Central and East European countries / Koyama, Yoji.