| article html file updated | 1 September 2025 11:41 CEST | Update | https://www.mdpi.com/2227-7072/8/4/64 |
| article html file updated | 22 July 2022 22:12 CEST | Update | - |
| article html file updated | 25 October 2020 11:45 CET | Original file | - |
| article pdf uploaded. | 25 October 2020 11:44 CET | Updated version of record | https://www.mdpi.com/2227-7072/8/4/64/pdf |
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