Lazreg, J.E., Benchohra, M. and Salim, A. 2022. Existence and ulam stability of k-generalized ψ-Hilfer fractional problem . Journal of Innovative Applied Mathematics and Computational Sciences. 2, 2 (May 2022), 1–13. DOI:https://doi.org/10.58205/jiamcs.v2i2.19.