| article html file updated | 18 August 2026 10:10 CEST | Update | https://www.mdpi.com/2218-1997/6/11/215 |
| article html file updated | 1 September 2025 14:00 CEST | Update | N/A |
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| article html file updated | 20 November 2020 13:46 CET | Original file | N/A |
| article pdf uploaded. | 20 November 2020 13:44 CET | Version of Record | https://www.mdpi.com/2218-1997/6/11/215/pdf |
| article xml uploaded. | 20 November 2020 13:44 CET | Update | https://www.mdpi.com/2218-1997/6/11/215/xml |
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