| article html file updated | 30 August 2025 06:35 CEST | Update | https://www.mdpi.com/1660-4601/15/9/1909 |
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| article pdf uploaded. | 3 September 2018 10:41 CEST | Updated version of record | https://www.mdpi.com/1660-4601/15/9/1909/pdf |
| article xml uploaded. | 3 September 2018 10:41 CEST | Update | https://www.mdpi.com/1660-4601/15/9/1909/xml |
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| article pdf uploaded. | 2 September 2018 12:03 CEST | Version of Record | https://www.mdpi.com/1660-4601/15/9/1909/pdf-vor |
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