DEHNERYS, Vitalii. On the preservation of the boundedness of the $l$-index under the action of the Bernardi integral operator and the Ruscheweyh derivative. PRECARPATHIAN BULLETIN OF THE SHEVCHENKO SCIENTIFIC SOCIETY. Number, [S. l.], n. 22(83), p. 29–35, 2026. DOI: 10.31471/2304-7399-2026-22(83)-29-35. Disponível em: https://pvntsh.nung.edu.ua/index.php/number/article/view/2234. Acesso em: 25 apr. 2026.