| article html file updated | 17 August 2026 02:03 CEST | Update | https://www.mdpi.com/2223-7747/9/2/201 |
| article html file updated | 31 August 2025 10:52 CEST | Update | N/A |
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| article pdf uploaded. | 6 February 2020 11:13 CET | Version of Record | https://www.mdpi.com/2223-7747/9/2/201/pdf |
| article xml uploaded. | 6 February 2020 11:13 CET | Update | https://www.mdpi.com/2223-7747/9/2/201/xml |
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