| article html file updated | 1 September 2025 17:06 CEST | Update | https://www.mdpi.com/1999-4907/12/1/20 |
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| article pdf uploaded. | 28 December 2020 06:38 CET | Updated version of record | https://www.mdpi.com/1999-4907/12/1/20/pdf |
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| article html file updated | 27 December 2020 09:36 CET | Original file | - |
| article pdf uploaded. | 27 December 2020 09:35 CET | Version of Record | https://www.mdpi.com/1999-4907/12/1/20/pdf-vor |
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