| article html file updated | 30 August 2025 21:37 CEST | Update | https://www.mdpi.com/2218-273X/9/6/251 |
| article html file updated | 20 July 2022 15:00 CEST | Update | - |
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| article html file updated | 26 June 2019 12:20 CEST | Original file | - |
| article pdf uploaded. | 26 June 2019 12:18 CEST | Updated version of record | https://www.mdpi.com/2218-273X/9/6/251/pdf |
| article xml uploaded. | 26 June 2019 12:18 CEST | Update | https://www.mdpi.com/2218-273X/9/6/251/xml |
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| article pdf uploaded. | 25 June 2019 16:21 CEST | Version of Record | https://www.mdpi.com/2218-273X/9/6/251/pdf-vor |
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