| Article ID: | iaor2013257 |
| Volume: | 7 |
| Issue: | 1 |
| Start Page Number: | 117 |
| End Page Number: | 126 |
| Publication Date: | Jan 2013 |
| Journal: | Optimization Letters |
| Authors: | Yang X, Zhao K, Wan X |
| Keywords: | nonsmooth optimization |
In this paper, by making use of some examples, we first point out some results are not true in the earlier works of Mishra and Lai (2009). Furthermore, we correct and modify corresponding results. In the end, we give an example to illustrate the main result. Our study modifies and improves some previously known results.