| article html file updated | 31 August 2025 11:02 CEST | Update | https://www.mdpi.com/2410-390X/4/1/6 |
| article html file updated | 20 July 2022 19:33 CEST | Update | - |
| article html file updated | 23 March 2020 09:10 CET | Original file | - |
| article pdf uploaded. | 23 March 2020 09:08 CET | Updated version of record | https://www.mdpi.com/2410-390X/4/1/6/pdf |
| article xml uploaded. | 23 March 2020 09:08 CET | Update | https://www.mdpi.com/2410-390X/4/1/6/xml |
| article xml file uploaded | 23 March 2020 09:08 CET | Update | - |
| article pdf uploaded. | 7 February 2020 13:54 CET | Version of Record | https://www.mdpi.com/2410-390X/4/1/6/pdf-vor |
| article xml file uploaded | 7 February 2020 13:54 CET | Original file | - |
