| article html file updated | 19 August 2026 17:31 CEST | Update | https://www.mdpi.com/2227-9040/9/6/137 |
| article html file updated | 2 September 2025 10:46 CEST | Update | N/A |
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| article pdf uploaded. | 15 June 2021 08:42 CEST | Updated version of record | https://www.mdpi.com/2227-9040/9/6/137/pdf |
| article xml uploaded. | 15 June 2021 08:42 CEST | Update | https://www.mdpi.com/2227-9040/9/6/137/xml |
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| article pdf uploaded. | 11 June 2021 15:39 CEST | Version of Record | https://www.mdpi.com/2227-9040/9/6/137/pdf-vor |
