| article html file updated | 31 August 2025 02:25 CEST | Update | https://www.mdpi.com/2227-7102/9/4/252 |
| article html file updated | 21 August 2025 22:46 CEST | Update | - |
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| article html file updated | 13 February 2020 22:25 CET | Update | - |
| article html file updated | 21 October 2019 10:01 CEST | Original file | - |
| article pdf uploaded. | 21 October 2019 10:00 CEST | Updated version of record | https://www.mdpi.com/2227-7102/9/4/252/pdf |
| article xml uploaded. | 21 October 2019 10:00 CEST | Update | https://www.mdpi.com/2227-7102/9/4/252/xml |
| article xml file uploaded | 21 October 2019 10:00 CEST | Update | - |
| article pdf uploaded. | 4 October 2019 07:33 CEST | Version of Record | https://www.mdpi.com/2227-7102/9/4/252/pdf-vor |
| article xml file uploaded | 4 October 2019 07:33 CEST | Original file | - |
