| article html file updated | 17 August 2026 04:50 CEST | Update | https://www.mdpi.com/2225-1146/8/1/9 |
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| article html file updated | 26 March 2020 07:37 CET | Original file | N/A |
| article pdf uploaded. | 26 March 2020 07:35 CET | Updated version of record | https://www.mdpi.com/2225-1146/8/1/9/pdf |
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| article pdf uploaded. | 4 March 2020 14:13 CET | Version of Record | https://www.mdpi.com/2225-1146/8/1/9/pdf-vor |
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