@article{Ryspaeva:2022Ag, author = "Ryspaeva, Elizaveta Borisovna and Kholtygin, Alexander Fedorovich", title = "{A study of unknown X-ray sources}", doi = "10.22323/1.425.0040", journal = "PoS", year = 2022, volume = "MUTO2022", pages = "040" }