| article html file updated | 31 August 2025 08:57 CEST | Update | https://www.mdpi.com/2227-7099/8/1/6 |
| article html file updated | 20 July 2022 17:29 CEST | Update | - |
| article html file updated | 1 April 2020 22:07 CEST | Update | - |
| article html file updated | 15 February 2020 02:46 CET | Update | - |
| article html file updated | 22 January 2020 07:48 CET | Original file | - |
| article pdf uploaded. | 22 January 2020 07:47 CET | Updated version of record | https://www.mdpi.com/2227-7099/8/1/6/pdf |
| article xml uploaded. | 22 January 2020 07:47 CET | Update | https://www.mdpi.com/2227-7099/8/1/6/xml |
| article xml file uploaded | 22 January 2020 07:47 CET | Update | - |
| article pdf uploaded. | 14 January 2020 12:05 CET | Version of Record | https://www.mdpi.com/2227-7099/8/1/6/pdf-vor |
| article xml file uploaded | 14 January 2020 12:05 CET | Original file | - |
