| article html file updated | 31 August 2025 09:03 CEST | Update | https://www.mdpi.com/2223-7747/9/1/109 |
| article html file updated | 20 July 2022 17:35 CEST | Update | - |
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| article pdf uploaded. | 15 January 2020 13:35 CET | Version of Record | https://www.mdpi.com/2223-7747/9/1/109/pdf |
| article xml uploaded. | 15 January 2020 13:35 CET | Update | https://www.mdpi.com/2223-7747/9/1/109/xml |
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