| article html file updated | 31 August 2025 11:06 CEST | Update | https://www.mdpi.com/2413-8851/4/1/9 |
| article html file updated | 20 July 2022 19:37 CEST | Update | - |
| article html file updated | 26 March 2020 12:32 CET | Original file | - |
| article pdf uploaded. | 26 March 2020 12:31 CET | Updated version of record | https://www.mdpi.com/2413-8851/4/1/9/pdf |
| article xml uploaded. | 26 March 2020 12:31 CET | Update | https://www.mdpi.com/2413-8851/4/1/9/xml |
| article xml file uploaded | 26 March 2020 12:31 CET | Update | - |
| article pdf uploaded. | 18 March 2020 09:57 CET | Updated version of record | https://www.mdpi.com/2413-8851/4/1/9/pdf-vor |
| article xml file uploaded | 18 March 2020 09:57 CET | Update | - |
| article pdf uploaded. | 10 March 2020 06:47 CET | Updated version of record | https://www.mdpi.com/2413-8851/4/1/9/pdf-vor |
| article pdf uploaded. | 8 February 2020 10:52 CET | Version of Record | https://www.mdpi.com/2413-8851/4/1/9/pdf-vor |
| article xml file uploaded | 8 February 2020 10:52 CET | Original file | - |
