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- Australian Astronomical ObservatoryAU1 paper
- Ben-Gurion University of the NegevIL1 paper
- California Polytechnic State UniversityUS1 paper
- Durham UniversityGB1 paper
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- Helsinki Institute of PhysicsFI1 paper
- New Mexico Institute of Mining and TechnologyUS1 paper
- Phillips Exeter AcademyUS1 paper
- Princeton Public SchoolsUS1 paper
- Rutherford Appleton LaboratoryGB1 paper
- Science OxfordGB1 paper
- Swedish Polar Research SecretariatSE1 paper
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