A. Afrouzi G, Kolagar SM, Hadjian A, Xu J. Variational Approach for a Class of Two-point Fractional Boundary Value Systems. MATEMATIKA [Internet]. 2018 Dec. 30 [cited 2024 Dec. 4];34(2):351-64. Available from: https://matematika.utm.my/index.php/matematika/article/view/898