| Article ID: | iaor19981822 |
| Country: | China |
| Volume: | 9 |
| Issue: | 1 |
| Start Page Number: | 6 |
| End Page Number: | 12 |
| Publication Date: | Jan 1996 |
| Journal: | Journal of Systems Science and Complexity |
| Authors: | Gao J.Z., Zhu Y.J. |
In this paper, the authors show that the two distinct vertices