| article html file updated | 31 August 2025 10:27 CEST | Update | https://www.mdpi.com/2223-7747/9/2/177 |
| article html file updated | 20 July 2022 18:58 CEST | Update | - |
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| article pdf uploaded. | 1 February 2020 12:22 CET | Version of Record | https://www.mdpi.com/2223-7747/9/2/177/pdf |
| article xml uploaded. | 1 February 2020 12:22 CET | Update | https://www.mdpi.com/2223-7747/9/2/177/xml |
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