| article html file updated | 31 August 2025 09:31 CEST | Update | https://www.mdpi.com/2218-1997/6/1/19 |
| article html file updated | 20 July 2022 18:03 CEST | Update | - |
| article html file updated | 15 February 2020 04:47 CET | Update | - |
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| article html file updated | 22 January 2020 14:05 CET | Original file | - |
| article pdf uploaded. | 22 January 2020 14:03 CET | Updated version of record | https://www.mdpi.com/2218-1997/6/1/19/pdf |
| article xml uploaded. | 22 January 2020 14:03 CET | Update | https://www.mdpi.com/2218-1997/6/1/19/xml |
| article xml file uploaded | 22 January 2020 14:03 CET | Update | - |
| article pdf uploaded. | 20 January 2020 16:42 CET | Version of Record | https://www.mdpi.com/2218-1997/6/1/19/pdf-vor |
| article xml file uploaded | 20 January 2020 16:42 CET | Original file | - |
