References

SOME FIXED POINT THEOREMS OF ORDERED CONTRACTIVE MAPPINGS


[1] H. Amann, On the number of solutions of nonlinear equations in ordered Banach spaces, J. Funct. Anal. 11 (1972), 346-384.

[2] Yihong Du, Fixed points of increasing operators in ordered Banach spaces and applications, Appl. Anal. 38 (1990), 1-20.

[3] Dajun Ge and V. Lakshmikantham, Couple fixed points of nonlinear operators with applications, Nonlinear Anal. TMA 11 (1987), 623-632.

[4] Dajun Ge, Fixed points of mixed monotone operators with applications, Appl. Anal. 31 (1988), 215-224.