| article html file updated | 31 August 2025 08:34 CEST | Update | https://www.mdpi.com/2223-7747/9/1/84 |
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| article pdf uploaded. | 9 January 2020 11:39 CET | Updated version of record | https://www.mdpi.com/2223-7747/9/1/84/pdf |
| article xml uploaded. | 9 January 2020 11:39 CET | Update | https://www.mdpi.com/2223-7747/9/1/84/xml |
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