| article html file updated | 24 December 2025 16:58 CET | Update | https://www.mdpi.com/1911-8074/13/1/9 |
| article html file updated | 31 August 2025 08:09 CEST | Update | N/A |
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| article html file updated | 10 January 2020 03:35 CET | Original file | N/A |
| article pdf uploaded. | 6 January 2020 10:55 CET | Updated version of record | https://www.mdpi.com/1911-8074/13/1/9/pdf |
| article xml uploaded. | 6 January 2020 10:55 CET | Update | https://www.mdpi.com/1911-8074/13/1/9/xml |
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| article pdf uploaded. | 3 January 2020 13:22 CET | Version of Record | https://www.mdpi.com/1911-8074/13/1/9/pdf-vor |
| article xml file uploaded | 3 January 2020 13:22 CET | Original file | N/A |
