| article html file updated | 31 August 2025 00:38 CEST | Update | https://www.mdpi.com/2227-7102/9/3/228 |
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| article pdf uploaded. | 29 August 2019 10:36 CEST | Version of Record | https://www.mdpi.com/2227-7102/9/3/228/pdf |
| article xml uploaded. | 29 August 2019 10:36 CEST | Update | https://www.mdpi.com/2227-7102/9/3/228/xml |
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