| Abbreviation | Meaning |
| NRPP | National Register of Populated Places |
| TU | Territorial units |
| ATS | Administrative-territorial structure |
| ATU | Administrative-territorial Unit |
| САТU | Composite Administrative-territorial Unit |
| NSI | National Statistical Institute |
| SG | State gazette |
| UCATTU | Unified Classification of Administrative-Territorial and Territorial Units |
| UCPP | Unified Classification of Populated Places |
| NUTS | Classification of territorial units for statistics |
| CATI | Composite Administrative-territorial index |
| dist | district |
| amend. | amendment |
| suppl. | supplement |