| Market-oriented Grids and Utility Computing: The State-of-the-art and Future Directions Recent countries visiting this post |  |
 | 5 | United States |
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| Market-oriented Grids and Utility Computing: The State-of-the-art and Future Directions Recent countries visiting this post | |
| 5 | United States |
| 4 | |
| 1 | Germany |