| A survey of scheduling problems with setup times or costs Recent countries visiting this post |  |
 | 8 | United States |
 | 1 | Portugal |
 | 1 | |
 | 1 | Russian Federation |
| A survey of scheduling problems with setup times or costs Recent countries visiting this post | |
| 8 | United States |
| 1 | Portugal |
| 1 | |
| 1 | Russian Federation |