| Identification and Reconstruction of a Small Leak Zone in a Pipe by a Spectral Element Method Recent countries visiting this post |  |
 | 4 | United States |
 | 1 | Russian Federation |
| Identification and Reconstruction of a Small Leak Zone in a Pipe by a Spectral Element Method Recent countries visiting this post | |
| 4 | United States |
| 1 | Russian Federation |