| article html file updated | 31 August 2025 11:51 CEST | Update | https://www.mdpi.com/2223-7747/9/2/253 |
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| article pdf uploaded. | 17 February 2020 09:02 CET | Version of Record | https://www.mdpi.com/2223-7747/9/2/253/pdf |
| article xml uploaded. | 17 February 2020 09:02 CET | Update | https://www.mdpi.com/2223-7747/9/2/253/xml |
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