Gravitational field of slightly deformed naked singularities Saken Toktarbay, Hernando Quevedo, Medeu Abishev and Aray Muratkhan Eur. Phys. J. C, 82 4 (2022) 382 Published online: 29 April 2022 DOI: 10.1140/epjc/s10052-022-10230-2