| article html file updated | 30 August 2025 11:02 CEST | Update | https://www.mdpi.com/2077-0375/9/1/15 |
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| article pdf uploaded. | 15 January 2019 11:49 CET | Updated version of record | https://www.mdpi.com/2077-0375/9/1/15/pdf |
| article pdf uploaded. | 15 January 2019 11:37 CET | Version of Record | https://www.mdpi.com/2077-0375/9/1/15/pdf-vor |
| article xml uploaded. | 15 January 2019 11:35 CET | Update | https://www.mdpi.com/2077-0375/9/1/15/xml |
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