| Article ID: | iaor20001692 |
| Country: | Germany |
| Volume: | 28 |
| Issue: | 2 |
| Start Page Number: | 253 |
| End Page Number: | 255 |
| Publication Date: | Jan 1999 |
| Journal: | International Journal of Game Theory |
| Authors: | Nakayama A., Naitoh T. |
Chang stated some inclusion relations for kernel, reasonable set, and ϵ-core of games with coalition structure. We give counter-examples and modify erroneous results.