| article html file updated | 16 August 2026 22:49 CEST | Update | https://www.mdpi.com/1996-1073/13/1/209 |
| article html file updated | 31 August 2025 08:00 CEST | Update | N/A |
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| article pdf uploaded. | 3 January 2020 10:41 CET | Updated version of record | https://www.mdpi.com/1996-1073/13/1/209/pdf |
| article xml uploaded. | 3 January 2020 10:41 CET | Update | https://www.mdpi.com/1996-1073/13/1/209/xml |
| article xml file uploaded | 3 January 2020 10:41 CET | Update | N/A |
| article html file updated | 2 January 2020 03:46 CET | Original file | N/A |
| article pdf uploaded. | 2 January 2020 03:44 CET | Version of Record | https://www.mdpi.com/1996-1073/13/1/209/pdf-vor |
| article xml file uploaded | 2 January 2020 03:44 CET | Original file | N/A |