ESSEL, John Fiifi; ZHANG, Lingling; ADDAI, Emmanuel. Boundary value problems of fractional differential equations with nonlocal and integral boundary conditions. International Journal of Advanced Engineering Research and Science, [S. l.], v. 8, n. 10, 2021. Disponível em: https://journal-repository.com/index.php/ijaers/article/view/4214.. Acesso em: 9 apr. 2025.