| article html file updated | 30 August 2025 13:35 CEST | Update | https://www.mdpi.com/2079-4991/9/4/506 |
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| article pdf uploaded. | 2 April 2019 08:45 CEST | Version of Record | https://www.mdpi.com/2079-4991/9/4/506/pdf |
| article xml uploaded. | 2 April 2019 08:45 CEST | Update | https://www.mdpi.com/2079-4991/9/4/506/xml |
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