Observational capabilities of the new medium- and low-resolution spectrograph at the 1.6-m telescope of the Sayan Observatory von Burenin, R. A., Amvrosov, A. L., Eselevich, M. V., Grigor’ev, V. M., Aref’ev, V. A., Vorob’ev, V. S., Lutovinov, A. A., Revnivtsev, M. G., Sazonov, S. Yu, Tkachenko, A. Yu, Khorunzhev, G. A., Yaskovich, A. L., Pavlinsky, M. N.

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Optical spectroscopy of candidates for quasars at 3 < z < 5.5 from the XMM-newton X-ray survey. A distant X-ray quasar at z = 5.08 von Khorunzhev, G. A., Burenin, R. A., Sazonov, S. Yu, Amvrosov, A. L., Eselevich, M. V.

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Optical Spectroscopy of Candidates for Quasars at 3<z<5.5 from the XMM-Newton X-ray survey. A distant X-ray Quasar at z=5.08 von Khorunzhev, G A, Burenin, R A, S Yu Sazonov, Amvrosov, A L, Eselevich, M V

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