Aleksandra Orpel

Eigenvalue intervals for higher order problems with singular nonlinearities

Donal O'Regan, Aleksandra Orpel, 2011, Appl. Math. Comput..

A variational approach to the eigenvalue problem for higher order BVPs with singular nonlinearities

Donal O'Regan, Aleksandra Orpel, 2012, Appl. Math. Comput..

Fixed point and variational methods for certain classes of boundary-value problems

Donal O'Regan, Aleksandra Orpel, D. O’Regan, 2013 .

Nonlinear BVPS with functional parameters

Aleksandra Orpel, A. Orpel, 2009 .

On The Existence of a Countable Set of Positive Solutions for a Nonlocal Boundary-Value Problem with Vector-Valued Response

Aleksandra Orpel, A. Orpel, 2005 .