| Performance limitations of the servomechanism problem when the number of tracking/disturbance poles increases Recent countries visiting this post |  |
 | 11 | United States |
 | 1 | |
 | 1 | Russian Federation |
| Performance limitations of the servomechanism problem when the number of tracking/disturbance poles increases Recent countries visiting this post | |
| 11 | United States |
| 1 | |
| 1 | Russian Federation |