| article html file updated | 15 August 2026 23:12 CEST | Update | https://www.mdpi.com/1996-1073/12/9/1681 |
| article html file updated | 30 August 2025 14:39 CEST | Update | N/A |
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| article html file updated | 3 May 2019 12:28 CEST | Original file | N/A |
| article pdf uploaded. | 3 May 2019 12:26 CEST | Version of Record | https://www.mdpi.com/1996-1073/12/9/1681/pdf |
| article xml uploaded. | 3 May 2019 12:26 CEST | Update | https://www.mdpi.com/1996-1073/12/9/1681/xml |
| article xml file uploaded | 3 May 2019 12:26 CEST | Original file | N/A |
