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Multiple delays in QSO 0957+561: observational evidence and interpretation |
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| Authors: | L. J. Goicoechea |
| Affiliation: | Departamento de Física Moderna, Universidad de Cantabria, Avda, Los Castros s/n E-39005 Santander, Spain |
| Abstract: | |
| Keywords: | gravitational lensing quasars: general quasars: individual: QSO 0957+561 |