Acta Applicandae Mathematicae · 2012 · 21 citations · 14 references
Natural SciencesMathematicsPhysicsDifferential EquationsExistence TheoremsExistence TheoryInitial Value ProblemsPartial Differential EquationsSystems Of Differential EquationsFractional Differential EquationsSecond-order Differential Equations
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Positive Solutions of Operator Equations.
A. R. Brodsky, M. A. Krasnosel’skii, Richard E. Flaherty et al. · American Mathematical Monthly · 1967 · 2.1K citations
Nonlinear problems in abstract cones
Mathematics and Computers in Simulation · 1989 · 466 citations