- Center for Astrophysics Harvard & SmithsonianUS1 paper
- European Space Research and Technology CentreNL1 paper
- Technion – Israel Institute of TechnologyIL1 paper
- The University of TokyoJP1 paper
- University of AmsterdamNL1 paper
- University of GenevaCH1 paper
- University of Maryland, College ParkUS1 paper
- University of MichiganUS1 paper
1 paper