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Relativistic motion in a nearby bright X-ray source.
- Published in:
- Nature, 1995, v. 374, n. 6518, p. 141, doi. 10.1038/374141a0
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- Publication type:
- Article
An unusually strong Einstein ring in the radio source PKS1830-211.
- Published in:
- Nature, 1991, v. 352, n. 6331, p. 132, doi. 10.1038/352132a0
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- Publication type:
- Article