| 1 (273) | National Observatory of Athens | GRC | |
| 2 (592) | Foundation for Research and Technology Hellas * | GRC | |
| 3 (698) | Institute of Chemical Engineering and High Temperature Chemical Processes | GRC | |
| 4 (862) | Demokritos, National Centre for Scientific Research | GRC | |
| 5 (923) | Academy of Athens | GRC | |
|