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Why Is the “Time Delay Controversy In Q0957+561 Not Yet Decided”?
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- Journal:
- Symposium - International Astronomical Union / Volume 173 / 1996
- Published online by Cambridge University Press:
- 25 May 2016, pp. 45-48
- Print publication:
- 1996
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- Article
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- You have access
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Spectral Variability of NGC 4151 in 1972–1991
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- Journal:
- Symposium - International Astronomical Union / Volume 159 / 1994
- Published online by Cambridge University Press:
- 19 July 2016, p. 401
- Print publication:
- 1994
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- Article
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- You have access
- Export citation