Abdo MS, Panchal SK, Shafei Hussien H. Fractional integro-differential equations with nonlocal conditions and ψ–Hilfer fractional derivative. MMA [Internet]. 2019Oct.25 [cited 2024Nov.18];24(4):564-8. Available from: https://jeelm.vgtu.lt/index.php/MMA/article/view/6330