Fixed point theorems for nonlinear operators with and without monotonicity in partially ordered Banach spaces. Ding, Hui-Sheng, Liang, Jin, Xiao, Ti-Jun (2010) Fixed Point Theory and Applications [electronic only]
Fixed points for discontinuous monotone operators. Cui, Yujun, Zhang, Xingqiu (2010) Fixed Point Theory and Applications [electronic only]
Fixed points of cone compression and expansion multimaps defined on Fréchet spaces: the projective limit approach. Agarwal, Ravi P., O'Regan, Donal (2006) Journal of Applied Mathematics and Stochastic Analysis