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, no. 22(83), Apr. 2026, pp. 29-35, doi:10.31471/2304-7399-2026-22(83)-29-35.