Open Science Harvester of NAS of Ukraine

Fixed point theory for weakly sequentially upper semicontinuous maps with applications to differential inclusions

by Agarwal, R.P., O'Regan, D.
Published in Нелінійні коливання (2002)

Existence of positive solutions for the singular equation (φp(y'))' + g(t, y, y') = 0

by Haishen, Lu, O'Regan, D., Chengkui Zhong
Published in Нелінійні коливання (2003)

Optimal existence theory for single and multiple positive periodic solutions to functional differential equations

by Jiang, D., O'Regan, D., Agarwal, R.P.
Published in Нелінійні коливання (2003)

Oscillation of certain fourth order functional differential equations

by Agarwal, R.P., Grace, S.R., O’Regan, D.
Published in Український математичний журнал (2007)

Eigenvalue characterization of a system of difference equations

by Agarwal, R.P., O'Regan, D., P. J. Y. Wong
Published in Нелінійні коливання (2004)