[1] Ascher, U.M., Mattheij, R.M.M., Russell, R.D.: 
Numerical solution of boundary value problems for ordinary differential equations. SIAM Classics Appl. Math. 13 (1995). 
MR 1351005[2] Djebali, S., Mebarki, K.: 
Fixed point index theory for perturbation of expansive mappings by $k$-set contraction. Topol. Methods Nonlinear Anal. 54 (no 2A) (2019), 613–640, DOI 10.12775/TMNA.2019.055. 
DOI 10.12775/TMNA.2019.055 | 
MR 4061312[3] Franco, D., Nieto, J.J., O’Regan, D.: 
Anti-periodic boundary value problem for nonlinear first-order differential equations. Math. Inequal. Appl. 6 (2003), 477–485. 
MR 1992487[4] Georgiev, S., Kheloufi, A., Mebarki, K.: Classical solutions for the Korteweg-De Vries equation. New trends Nonlinear Anal. Appl., (to appear), 2022.
[6] Hong, S.: 
Boundary-value problems for first and second order functional differential inclusions. EJDE 2033 (no 32) (2003), 1–10. 
MR 1971018[9] Tisdell, C.C.: 
On the solvability of nonlinear first-order boundary value problems. EJDE 2006 (no 80) (2006), 1–8. 
MR 2240828[10] Wang, D.B.: 
Periodic boundary value problems for nonlinear first-order impulsive dynamic equations on time scales. Adv. Difference Equ. 2012 (12) (2012), 9 pp. 
MR 2915355[12] Xing, Y., Fu, Y.: 
Some new results for BVPs of first-order nonlinear integro-differential equations of volterra type. Adv. Difference Equ. 2011 (14) (2011), 17 pp. 
MR 2824941