Pandey R, Shukla C, Shukla A, Upadhyay A, Singh AK. A new approach on approximate controllability of Sobolev-type Hilfer fractional differential equations. Int. J. Optim. Control, Theor. Appl. (IJOCTA) [Internet]. 2023 Jan. 31 [cited 2025 Feb. 23];13(1):130-8. Available from: http://ijocta.org/index.php/files/article/view/1256