| article html file updated | 1 September 2025 15:30 CEST | Update | https://www.mdpi.com/2311-5637/6/4/120 |
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| article html file updated | 17 December 2020 10:00 CET | Update | - |
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| article pdf uploaded. | 17 December 2020 07:05 CET | Updated version of record | https://www.mdpi.com/2311-5637/6/4/120/pdf |
| article xml uploaded. | 17 December 2020 07:05 CET | Update | https://www.mdpi.com/2311-5637/6/4/120/xml |
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