| article html file updated | 1 September 2025 17:26 CEST | Update | https://www.mdpi.com/1424-8220/21/1/209 | 
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| article pdf uploaded. | 5 January 2021 04:02 CET | Updated version of record | https://www.mdpi.com/1424-8220/21/1/209/pdf | 
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| article html file updated | 31 December 2020 08:32 CET | Original file | - | 
| article pdf uploaded. | 31 December 2020 08:30 CET | Version of Record | https://www.mdpi.com/1424-8220/21/1/209/pdf-vor | 
| article xml uploaded. | 31 December 2020 08:30 CET | Update | - | 
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