| article html file updated | 31 August 2025 22:10 CEST | Update | https://www.mdpi.com/2218-1997/6/6/75 |
| article html file updated | 21 July 2022 06:34 CEST | Update | N/A |
| article html file updated | 22 June 2020 04:30 CEST | Original file | N/A |
| article pdf uploaded. | 22 June 2020 04:29 CEST | Updated version of record | https://www.mdpi.com/2218-1997/6/6/75/pdf |
| article xml uploaded. | 22 June 2020 04:29 CEST | Update | https://www.mdpi.com/2218-1997/6/6/75/xml |
| article xml file uploaded | 22 June 2020 04:29 CEST | Original file | N/A |
| article pdf uploaded. | 31 May 2020 09:59 CEST | Version of Record | https://www.mdpi.com/2218-1997/6/6/75/pdf-vor |
