Bykov, S. D. High Energy Astrophysics, MPI for Astrophysics, Max Planck Society;
Gilfanov, M. R. High Energy Astrophysics, MPI for Astrophysics, Max Planck Society;
Bykov, S. D., Belvedersky, M. I., & Gilfanov, M. R. (2022). Optical cross-match of SRG/eROSITA X-ray sources using the Deep Lockman Hole Survey as an example. Astronomy Letters-a Journal of Astronomy and Space Astrophysics, 48(11), 653-664. doi:10.1134/S1063773722110044.