Dan Maroncelli
      An abstract approach to nonlinear boundary value problems at resonance
      Nonlinear Analysis and Differential Equations, Vol. 2, 2014, no. 2, 83-90
      http://dx.doi.org/10.12988/nade.2014.421

Copyright © 2014 Dan Maroncelli. This article is distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.