[1] R.P. Agarwal, D. O’Regan, S. Stanek, Positive solutions for Dirichlet problem of singular nonlinear fractional differential equations, J. Math. Anal. Appl, 371 2010, 57-68.
[2] R.P. Agarwal, B. Ahmad, J.J. Nieto Fractional differential equations with nonlocal (parametric type) anti-periodic boundary conditions, Filomat, 31(5) 2017, 1207-1214.
[3] B. Ahmad, A. Alsaed, S.k. Ntouyas, J. Tariboon, Hadamard-Type Fractional Differential Equations, Inclusions andInequalities, Springer, Berlin, 2017.
[4] B. Ahmad, R. Luca, Existence of solutions for sequential fractional integro-differential equations and inclusions with nonlocal boundary conditions, Appl.ied Math. Comput, 339 2018, 516-534.
[5] B. Ahmad, J.J. Nieto, Sequential fractional differential equations with three-point boundary conditions, Comput. Math. Appl, 64(10) 2012, 30463052.
[6] B. Ahmad, A. Alsaedi, M.H. Aqlan, Sequential fractional differential equations and unification of anti-periodic and multi-point boundary conditions, J. Non. Sci. Appl, 10 2017, 71-83.
[7] A. Ahmed, H.H.Mohammed, A. Bashir, On anti-periodic type boundary problems of sequential fractional differential equations of order q ∈ (2,3), J. Comput. Anal. Appl, 24(2) 2018, 310-317.
[8] S. Aljoudi, B. Ahmad, J.J. Nieto, A. Alsaedi, A coupled system of Hadamard type sequential fractional differential equations with coupled strip conditions, Chaos. Solit. Fract, 91 2016, 39-46.
[9] Z. Bai, H. Lu, Positive solutions for a boundary value problem of nonlinear fractional differential equation, J. Math. Anal. Appl, 311 2005, 495-505.
[10] D. Baleanu, JA.T. Machado, A.C. Luo, Fractional Dynamics and Control, Springer Science, 2012.
[11] D. Baleanu, K. Diethelm, E. Scalas, J.J.Trujillo, Fractional calculus: models and numerical methods, World Scientific: Singapore, Singapore, 2012.
[12] K. Deimling, Nonlinear Functional Analysis, Spring, Berlin-Heidelberg, 1985.
[13] D. Delbosco, L. Rodino, Existence and uniqueness for a nonlinear fractional differential equation, J. Math. Anal. Appl, 204 1996, 609-625.
[14] K. Diethelm, The Analysis of Fractional Differential Equations, Springer-Verlag, Berlin, 2010.
[15] K.M. Furati, A Cauchy-type problem with a sequential fractional derivative in the space of continuous functions, Bound. Value Prob, 2012 2012, 1-14.
[16] A. Granas, J. Dugundji, Fixed Point Theory, Spring, New York, 2003.
[17] R. Hilfer, Applications of fractional calculus in physics, World Sci. Publishing, River Edge, 2000.
[18] J. Jiang, L. Liu, Existence of solutions for a sequential fractional differential system with coupled boundary conditions, Bound. Val. Prob, 2016 2016.

[19] A.A. Kilbas, H. Srivastava, J. Trujillo, Theory and application of fractional differential equations, Elsevier B.V, Netherlands, 2006.
[20] Q. Li, S. Sun, On the existence of positive solutions for initial value problem to a class of fractional differential equation, Proceedings of the 7th conference on biological dynamic system and stability of differential equation, vol. II. Chongqing: World Academic Press, 2010, 886-889.
[21] Y. Li, Y. Sang, H. Zhang, Solvability of a coupled system of nonlinear fractional differential equations with fractional integral conditions, J. Appl. Math. Comput, 50(1-2) 2016, 73-91.
[22] Y. Lou, Anti-periodic boundary value problems for first-order impulsive differential inclusions, Ind.J. Pure and Appl. Math, 51 2020, 1373-1381.
[23] T. Qi, Y. Liu, Y. Zou, Existence result for a class of coupled fractional differential systems with integral boundary value conditions, J. Nonli. Sci. Appl, 10(7) 2017, 4034-4045.
[24] Y. Qiao and Z. Zhou, Existence of solutions for a class of fractional differential equations with integral and anti-periodic boundary conditions, Bound. Val. Prob, 2017 2017.
[25] B. Ross(Ed.), The fractional calculus and its application, in: Lecture notes in mathematics, Berlin, Springer-Verlag, 1975.
[26] A. Zada and S. Ali, Stability analysis of multi-point boundary value problem for sequential fractional differential equations with non-instantaneous impulses, Int. J. Nonl. Sci. Numer. Simul, 19(78) 2018, 763-774.
[27] H. Zhang, Y. Li, W. Lu, Existence and uniqueness of solutions for a coupled system of nonlinear fractional differential equations with fractional integral boundary conditions, J. Nonli. Sci. Appl, 9(5) 2016, 2434-2447.
[28] H. Zhang, Y. Li, J. Yang, New sequential fractional differential equations with mixed-type boundary conditions, J. Func. Spac, 2020 2020.
[29] Y. Zhou, J. Wang, L. Zhang, Basic Theory of Fractional Differential Equations, World Scientific, Singapore, 2016.
[30] Y. Zou, G. He, The existence of solutions to integral boundary value problems of fractional differential equations at resonance, J. Func. Spac, 2017 2017.
[31] M. Zuo, X. Hao, L. Liu, Y. Cui, Existence results for impulsive fractional integro-differential equation of mixed type with constant coefficient and antiperiodic boundary conditions, Bound. Val. Prob, 2017
2017.