@article{Khrapov2024retrograde,
author={Khrapov, S.. and Khoperskov, A.. and Khrapov, N..},
title={Retrograde fall of intergalactic gas onto the S-galaxy: polar rings and activity of galactic nuclei},
conference={Modern astronomy: from the Early Universe to exoplanets and black holes},
publisher={Special Astrophysical Observatory of the Russian Academy of Sciences},
year={2024},
pages={155-160},
}