1. Oparin O. Book review: Sorochan, S. B. Romeiskoe tsarstvo. Kniga dlia chteniia po istorii Vizantii. Khar’kov, ch. 1, 2018, 720 s.; ch. 2, 2019, 476 s.; ch. 3, 2020, 1086 s. // The Journal of V. N. Karazin Kharkiv National University. Series: History. 2021. № 60. C. 156-159.