| article html file updated | 2 September 2025 09:35 CEST | Update | https://www.mdpi.com/1999-4907/12/6/721 |
| article html file updated | 26 July 2022 22:27 CEST | Update | - |
| article html file updated | 4 June 2021 03:45 CEST | Update | - |
| article pdf uploaded. | 4 June 2021 03:44 CEST | Updated version of record | https://www.mdpi.com/1999-4907/12/6/721/pdf |
| article xml uploaded. | 4 June 2021 03:44 CEST | Update | https://www.mdpi.com/1999-4907/12/6/721/xml |
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| article html file updated | 2 June 2021 12:09 CEST | Update | - |
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| article pdf uploaded. | 2 June 2021 12:08 CEST | Updated version of record | https://www.mdpi.com/1999-4907/12/6/721/pdf-vor |
| article xml file uploaded | 2 June 2021 12:08 CEST | Original file | - |
| article pdf uploaded. | 1 June 2021 13:06 CEST | Version of Record | https://www.mdpi.com/1999-4907/12/6/721/pdf-vor |
