%0 Journal Article %A Choukri Derbazi %A Zidane Baitiche %A Mouffak Benchohra %A Gaston N %A Guérékata %T Existence, uniqueness, approximation of solutions and $\mathbb E_{\alpha}$--Ulam stability results for a class of nonlinear fractional differential equations involving $\psi$--Caputo derivative with initial conditions %J Mathematica Moravica %D 2021 %P 1 - 30 %V 25 %N 1 %I mathdoc %U https://geodesic-test.mathdoc.fr/item/MM3_2021_25_1_a0/ %F MM3_2021_25_1_a0