| article html file updated | 31 August 2025 07:55 CEST | Update | https://www.mdpi.com/1999-4923/12/1/30 |
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| article pdf uploaded. | 18 January 2020 11:42 CET | Updated version of record | https://www.mdpi.com/1999-4923/12/1/30/pdf |
| article xml uploaded. | 18 January 2020 11:42 CET | Update | https://www.mdpi.com/1999-4923/12/1/30/xml |
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| article pdf uploaded. | 1 January 2020 07:02 CET | Version of Record | https://www.mdpi.com/1999-4923/12/1/30/pdf-vor |
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