Copyright © 2011 Tongxing Li et al. 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.
Some oscillation criteria are established for the second-order superlinear neutral differential equations , , where , , , , and . Our results are based on the cases or . Two examples are also provided to illustrate these results.