[1] R.P. Agarwal, D. O’Regan, and P.J.Y.Wong, Positive Solutions of Differential, Difference and Integral Equations, Kluwer Academic Publishers, Dordrecht, The Netherlands, 1999.
[2] R.I. Avery and J. Henderson, Two positive fixed points of nonlinear operators on ordered Banach spaces, Comm. Appl. Nonlinear Anal. 8 (2001), 27–36.
[3] R.I. Avery and J. Henderson, Existence of three positive pseudo-symmetric solutions for a one-dimensional p-Laplacian, J. Math. Anal. Appl. 277 (2003), 395–404.
[4] C. Bai, Existence of positive solutions for boundary value problems of fractional functional differential equations, Elec. J. Qual. Theory Diff. Equ. 30 (2010), 1–14.
[5] Z. Bai and H. Lu, Positive solutions for boundary value problems of nonlinear fractional differential equations, J. Math. Anal. Appl. 311 (2005), 495–505.
[6] M. Benchohra, J. Henderson, S.K. Ntoyuas, and A. Ouahab, Existence results for fractional order functional differential equations with infinite delay, J. Math. Anal. Appl. 338 (2008), 1340–1350.
[7] G. Chai, Positive solutions for boundary value problem of fractional differential equation with p-Laplacian operator, Bound. Value Probl. 2012 (2012), 1–18.
[8] T. Chen and W. Liu, An anti-periodic boundary value problem for the fractional differential equation with a p-Laplacian operator Appl. Math. Lett. 25 (2012), 1671–1675.
[9] L. Diening, P. Lindqvist, and B.Kawohl, Mini-Workshop: The p-Laplacian Operator and Applications, Oberwolfach Rep.. 10 (2013), 433–482.
[10] J. Henderson and R. Luca, Boundary Value Problems for Systems of Differential, Difference and Fractional Equations. Positive solutions, Elsevier, Amsterdam, 2016.
[11] A.A. Kilbas, H.M. Srivastava, and J.J. Trujillo, Theory and Applications of Fractional Differential Equations, North-Holland Mathematics Studies. vol. 204, Elsevier Science, Amsterdam, 2006.
[12] L. Kong and J. Wang, Multiple positive solutions for the one-dimensional p-Laplacian, Nonlinear Anal. 42 (2000), 1327–1333.
[13] B.M.B., Krushna and K.R. Prasad, Eigenvalue intervals for the existence of positive solutions to system of multipoint fractional order boundary value problems, J. Int. Math. Virtual Inst. 6 (2016), 49–65.
[14] B.M.B. Krushna, Eigenvalues for iterative systems of Riemann–Liouville type p-Laplacian fractional-order boundary-value problems in Banach spaces, Comp. Appl. Math. 39 (2020), 1–15.
[15] I. Podulbny, Fractional Differential Equations, Academic Press, San Diego, 1999.
[16] J. Sabatier, O.P. Agrawal, and J.A.T. Machado, Advances in Fractional Calculus: Theoretical Developments and Applications in Physics and Engineering, Springer, Dordrecht, 2007.
[17] S.G. Samko, A.A. Kilbas, and O.I. Marichev, Fractional Integral and Derivatives: Theory and Applications, Gordon and Breach, Langhorne, PA, 1993.
[18] K.R. Prasad and B.M.B. Krushna, Positive solutions to iterative systems of fractional order three-point boundary value problems with Riemann–Liouville derivative, Frac. Differ. Calc. 5 (2015), 137–150.
[19] K.R. Prasad and B.M.B. Krushna, Multiple positive solutions for a coupled system of p-Laplacian fractional order two-point boundary value problems, Int. J. Differ. Equ. 2014 (2014), 1–10.
[20] K.R. Prasad and B.M.B. Krushna, Solvability of p-Laplacian fractional higher order two-point boundary value problems, Commun. Appl. Anal. 19 (2015), 659–678.
[21] K.R. Prasad and B.M.B. Krushna, Multiple positive solutions for a coupled system of Riemann–Liouville fractional order two-point boundary value problems, Nonlinear Stud. 20 (2013), 501–511.
[22] K.R. Prasad and B.M.B. Krushna, Eigenvalues for iterative systems of Sturm–Liouville fractional order two-point boundary value problems, Fract. Calc. Appl. Anal. 17 (2014), 638–653.
[23] C. Yang and J. Yan, Positive solutions for third order Sturm–Liouville boundary value problems with p-Laplacian, Comput. Math. Appl. 59 (2010), 2059–2066.