“Relative controllability of neutral semilinear$(k,\chi)$-Hilfer fractional integro-differential systemswith nonlocal initial conditions”, NS, vol. 33, no. 3, pp. 895–908, Aug. 2026, Accessed: Aug. 31, 2026. [Online]. Available: https://www.nonlinearstudies.com/index.php/nonlinear/article/view/4400