| article html file updated | 30 August 2025 23:58 CEST | Update | https://www.mdpi.com/2227-7102/9/3/219 |
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| article pdf uploaded. | 15 August 2019 09:54 CEST | Version of Record | https://www.mdpi.com/2227-7102/9/3/219/pdf |
| article xml uploaded. | 15 August 2019 09:54 CEST | Update | https://www.mdpi.com/2227-7102/9/3/219/xml |
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