| article html file updated | 1 September 2025 16:55 CEST | Update | https://www.mdpi.com/1911-8074/14/1/4 |
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| article pdf uploaded. | 31 December 2020 16:31 CET | Updated version of record | https://www.mdpi.com/1911-8074/14/1/4/pdf |
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| article html file updated | 24 December 2020 12:48 CET | Original file | - |
| article pdf uploaded. | 24 December 2020 12:47 CET | Version of Record | https://www.mdpi.com/1911-8074/14/1/4/pdf-vor |
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