| article html file updated | 1 September 2025 11:23 CEST | Update | https://www.mdpi.com/2227-9091/8/4/109 |
| article html file updated | 22 July 2022 21:46 CEST | Update | - |
| article html file updated | 1 November 2020 14:40 CET | Original file | - |
| article pdf uploaded. | 1 November 2020 14:39 CET | Updated version of record | https://www.mdpi.com/2227-9091/8/4/109/pdf |
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