| article html file updated | 30 August 2025 14:51 CEST | Update | https://www.mdpi.com/2410-3896/4/2/47 |
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| article pdf uploaded. | 9 May 2019 11:57 CEST | Version of Record | https://www.mdpi.com/2410-3896/4/2/47/pdf |
| article xml uploaded. | 9 May 2019 11:57 CEST | Update | https://www.mdpi.com/2410-3896/4/2/47/xml |
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