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Observational determination of the time delays in gravitational lens system Q2237+0305

V. Vakulik, R. Schild, V. Dudinov, S. Nuritdinov, V. Tsvetkova, O. Burkhonov and T. Akhunov

A&A, 447 3 (2006) 905-913

DOI: https://doi.org/10.1051/0004-6361:20053574

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