Fixed point theory for weakly sequentially upper semicontinuous maps with applications to differential inclusions von Agarwal, R.P., O'Regan, D.

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Existence of positive solutions for the singular equation (φp(y'))' + g(t, y, y') = 0 von Haishen, Lu, O'Regan, D., Chengkui Zhong

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Optimal existence theory for single and multiple positive periodic solutions to functional differential equations von Jiang, D., O'Regan, D., Agarwal, R.P.

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Oscillation of certain fourth order functional differential equations von Agarwal, R.P., Grace, S.R., O’Regan, D.

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Eigenvalue characterization of a system of difference equations von Agarwal, R.P., O'Regan, D., P. J. Y. Wong

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