| article html file updated | 2 September 2025 11:00 CEST | Update | https://www.mdpi.com/2227-9067/8/6/503 |
| article html file updated | 27 July 2022 00:16 CEST | Update | N/A |
| article html file updated | 21 June 2021 03:00 CEST | Update | N/A |
| article html file updated | 21 June 2021 02:59 CEST | Update | N/A |
| article html file updated | 21 June 2021 02:58 CEST | Original file | N/A |
| article pdf uploaded. | 21 June 2021 02:57 CEST | Updated version of record | https://www.mdpi.com/2227-9067/8/6/503/pdf |
| article xml uploaded. | 21 June 2021 02:57 CEST | Update | https://www.mdpi.com/2227-9067/8/6/503/xml |
| article xml file uploaded | 21 June 2021 02:57 CEST | Original file | N/A |
| article pdf uploaded. | 14 June 2021 18:09 CEST | Version of Record | https://www.mdpi.com/2227-9067/8/6/503/pdf-vor |
