| article html file updated | 31 August 2025 18:12 CEST | Update | https://www.mdpi.com/2218-1997/6/4/59 |
| article html file updated | 21 July 2022 02:39 CEST | Update | - |
| article html file updated | 27 April 2020 11:10 CEST | Original file | - |
| article pdf uploaded. | 27 April 2020 11:09 CEST | Updated version of record | https://www.mdpi.com/2218-1997/6/4/59/pdf |
| article xml uploaded. | 27 April 2020 11:09 CEST | Update | https://www.mdpi.com/2218-1997/6/4/59/xml |
| article xml file uploaded | 27 April 2020 11:09 CEST | Update | - |
| article pdf uploaded. | 22 April 2020 13:45 CEST | Version of Record | https://www.mdpi.com/2218-1997/6/4/59/pdf-vor |
| article xml file uploaded | 22 April 2020 13:45 CEST | Original file | - |
