Non-Resonant Oscillations for Some Fourth-Order Differential Equations with Delay Author(s): S. A. Iyase Source: Mathematical Proceedings of the Royal Irish Academy, Vol. 99A, No. 1 (Sep., 1999), pp. 113-121 Published by: Royal Irish Academy Stable URL: http://www.jstor.org/stable/20459749 Accessed: 15-08-2016 17:47 UTC Your use of the JSTOR archive indicates your acceptance of the Terms & Conditions of Use, available at http://about.jstor.org/terms JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact support@jstor.org. Royal Irish Academy is collaborating with JSTOR to digitize, preserve and extend access to Mathematical Proceedings of the Royal Irish Academy This content downloaded from 80.248.0.226 on Mon, 15 Aug 2016 17:47:23 UTC All use subject to http://about.jstor.org/terms