| article html file updated | 30 August 2025 13:48 CEST | Update | https://www.mdpi.com/2412-3811/4/2/15 |
| article html file updated | 21 August 2025 20:36 CEST | Update | - |
| article html file updated | 12 February 2020 04:01 CET | Update | - |
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| article pdf uploaded. | 13 May 2019 11:31 CEST | Updated version of record | https://www.mdpi.com/2412-3811/4/2/15/pdf |
| article xml uploaded. | 13 May 2019 11:31 CEST | Update | https://www.mdpi.com/2412-3811/4/2/15/xml |
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| article pdf uploaded. | 9 April 2019 13:52 CEST | Version of Record | https://www.mdpi.com/2412-3811/4/2/15/pdf-vor |
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