| article html file updated | 2 September 2025 02:26 CEST | Update | https://www.mdpi.com/2227-9067/8/4/271 |
| article html file updated | 25 July 2022 10:19 CEST | Update | - |
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| article pdf uploaded. | 1 April 2021 11:52 CEST | Version of Record | https://www.mdpi.com/2227-9067/8/4/271/pdf |
| article xml uploaded. | 1 April 2021 11:52 CEST | Update | https://www.mdpi.com/2227-9067/8/4/271/xml |
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