| article html file updated | 30 August 2025 21:35 CEST | Update | https://www.mdpi.com/2227-7102/9/2/157 |
| article html file updated | 21 August 2025 21:28 CEST | Update | - |
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| article pdf uploaded. | 26 June 2019 07:40 CEST | Updated version of record | https://www.mdpi.com/2227-7102/9/2/157/pdf |
| article xml uploaded. | 26 June 2019 07:40 CEST | Update | https://www.mdpi.com/2227-7102/9/2/157/xml |
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| article html file updated | 25 June 2019 10:55 CEST | Original file | - |
| article pdf uploaded. | 25 June 2019 10:54 CEST | Version of Record | https://www.mdpi.com/2227-7102/9/2/157/pdf-vor |
| article xml file uploaded | 25 June 2019 10:54 CEST | Original file | - |
