| article html file updated | 31 August 2025 08:05 CEST | Update | https://www.mdpi.com/2227-7390/8/1/69 |
| article html file updated | 19 July 2022 20:13 CEST | Update | - |
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| article html file updated | 10 January 2020 02:55 CET | Original file | - |
| article pdf uploaded. | 6 January 2020 04:22 CET | Updated version of record | https://www.mdpi.com/2227-7390/8/1/69/pdf |
| article xml uploaded. | 6 January 2020 04:22 CET | Update | https://www.mdpi.com/2227-7390/8/1/69/xml |
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| article pdf uploaded. | 4 January 2020 04:15 CET | Version of Record | https://www.mdpi.com/2227-7390/8/1/69/pdf-vor |
| article xml file uploaded | 4 January 2020 04:15 CET | Original file | - |
