| article html file updated | 30 August 2025 11:20 CEST | Update | https://www.mdpi.com/2218-1997/5/2/40 |
| article html file updated | 18 July 2022 00:41 CEST | Update | - |
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| article html file updated | 30 January 2019 05:25 CET | Original file | - |
| article pdf uploaded. | 30 January 2019 05:23 CET | Updated version of record | https://www.mdpi.com/2218-1997/5/2/40/pdf |
| article xml uploaded. | 30 January 2019 05:23 CET | Update | https://www.mdpi.com/2218-1997/5/2/40/xml |
| article xml file uploaded | 30 January 2019 05:23 CET | Update | - |
| article pdf uploaded. | 22 January 2019 11:25 CET | Updated version of record | https://www.mdpi.com/2218-1997/5/2/40/pdf-vor |
| article pdf uploaded. | 22 January 2019 11:22 CET | Version of Record | https://www.mdpi.com/2218-1997/5/2/40/pdf-vor |
| article xml file uploaded | 22 January 2019 11:22 CET | Original file | - |
