| article html file updated | 31 August 2025 18:23 CEST | Update | https://www.mdpi.com/2227-9091/8/2/40 |
| article html file updated | 21 July 2022 02:49 CEST | Update | - |
| article html file updated | 24 April 2020 06:15 CEST | Original file | - |
| article pdf uploaded. | 24 April 2020 06:14 CEST | Updated version of record | https://www.mdpi.com/2227-9091/8/2/40/pdf |
| article xml uploaded. | 24 April 2020 06:14 CEST | Update | https://www.mdpi.com/2227-9091/8/2/40/xml |
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| article pdf uploaded. | 23 April 2020 16:37 CEST | Version of Record | https://www.mdpi.com/2227-9091/8/2/40/pdf-vor |
| article xml file uploaded | 23 April 2020 16:37 CEST | Original file | - |
