1 January 2021 - 1 January 2023
| DOI | https://doi.org/10.48597/ZBFC-CVUW |
|---|---|
| Start time | 1 January 2021 |
| Stop time | 1 January 2023 |
| Valid since | 25 April 2025 10:49:58 |
| DOI | https://doi.org/10.48597/ZBFC-CVUW |
|---|---|
| Start time | 1 January 2021 |
| Stop time | 1 January 2023 |
| Valid since | 25 April 2025 10:49:58 |
| DOI | https://doi.org/10.48597/99VC-SJUU |
|---|---|
| Start time | 1 January 2021 |
| Stop time | 1 January 2023 |
| Valid from | 5 February 2025 13:44:41 |
| Valid to | 25 April 2025 10:49:58 |
| DOI | https://doi.org/10.48597/SP2N-A6EK |
|---|---|
| Start time | 1 January 2021 |
| Stop time | 1 January 2022 |
| Valid from | 4 February 2025 22:54:34 |
| Valid to | 5 February 2025 13:44:41 |