| article html file updated | 16 August 2026 22:50 CEST | Update | https://www.mdpi.com/1999-4915/12/1/51 |
| article html file updated | 24 December 2025 16:57 CET | Update | N/A |
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| article html file updated | 2 January 2020 07:50 CET | Original file | N/A |
| article pdf uploaded. | 2 January 2020 07:48 CET | Version of Record | https://www.mdpi.com/1999-4915/12/1/51/pdf |
| article xml uploaded. | 2 January 2020 07:48 CET | Update | https://www.mdpi.com/1999-4915/12/1/51/xml |
| article xml file uploaded | 2 January 2020 07:48 CET | Original file | N/A |
