Academic Editor: Juan J. Nieto
Copyright © 2009 Yansheng Liu and Donal O'Regan. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
By using bifurcation techniques, this paper investigates the existence
of nodal solutions for a class of fourth-order -point boundary value problems. Our results improve those in the literature.