| article html file updated | 31 August 2025 21:40 CEST | Update | https://www.mdpi.com/2218-6581/9/2/40 |
| article html file updated | 21 July 2022 06:04 CEST | Update | - |
| article html file updated | 12 June 2020 12:52 CEST | Original file | - |
| article pdf uploaded. | 12 June 2020 12:50 CEST | Updated version of record | https://www.mdpi.com/2218-6581/9/2/40/pdf |
| article xml uploaded. | 12 June 2020 12:50 CEST | Update | https://www.mdpi.com/2218-6581/9/2/40/xml |
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| article pdf uploaded. | 26 May 2020 15:31 CEST | Version of Record | https://www.mdpi.com/2218-6581/9/2/40/pdf-vor |
| article xml file uploaded | 26 May 2020 15:31 CEST | Original file | - |
