| article html file updated | 31 August 2025 09:45 CEST | Update | https://www.mdpi.com/1999-4923/12/2/91 |
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| article pdf uploaded. | 17 February 2020 14:57 CET | Updated version of record | https://www.mdpi.com/1999-4923/12/2/91/pdf |
| article xml uploaded. | 17 February 2020 14:57 CET | Update | https://www.mdpi.com/1999-4923/12/2/91/xml |
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| article pdf uploaded. | 22 January 2020 17:12 CET | Version of Record | https://www.mdpi.com/1999-4923/12/2/91/pdf-vor |
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