| article html file updated | 25 December 2025 06:54 CET | Update | https://www.mdpi.com/2297-8739/8/4/39 |
| article html file updated | 2 September 2025 01:51 CEST | Update | - |
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| article html file updated | 27 March 2021 00:43 CET | Original file | - |
| article pdf uploaded. | 26 March 2021 13:07 CET | Version of Record | https://www.mdpi.com/2297-8739/8/4/39/pdf |
| article xml uploaded. | 26 March 2021 13:07 CET | Update | https://www.mdpi.com/2297-8739/8/4/39/xml |
| article xml file uploaded | 26 March 2021 13:07 CET | Original file | - |
