| article html file updated | 31 August 2025 02:31 CEST | Update | https://www.mdpi.com/2075-4701/9/10/1081 |
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| article pdf uploaded. | 23 October 2019 10:17 CEST | Updated version of record | https://www.mdpi.com/2075-4701/9/10/1081/pdf |
| article xml uploaded. | 23 October 2019 10:17 CEST | Update | https://www.mdpi.com/2075-4701/9/10/1081/xml |
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| article pdf uploaded. | 7 October 2019 16:15 CEST | Version of Record | https://www.mdpi.com/2075-4701/9/10/1081/pdf-vor |
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