| article html file updated | 31 August 2025 02:26 CEST | Update | https://www.mdpi.com/2227-7102/9/4/253 |
| article html file updated | 20 July 2022 02:12 CEST | Update | - |
| article html file updated | 13 February 2020 22:29 CET | Update | - |
| article html file updated | 30 October 2019 03:17 CET | Update | - |
| article pdf uploaded. | 30 October 2019 03:16 CET | Updated version of record | https://www.mdpi.com/2227-7102/9/4/253/pdf |
| article xml uploaded. | 30 October 2019 03:16 CET | Update | https://www.mdpi.com/2227-7102/9/4/253/xml |
| article xml file uploaded | 30 October 2019 03:16 CET | Update | - |
| article html file updated | 29 October 2019 12:38 CET | Original file | - |
| article pdf uploaded. | 29 October 2019 12:37 CET | Updated version of record | https://www.mdpi.com/2227-7102/9/4/253/pdf-vor |
| article xml uploaded. | 29 October 2019 12:37 CET | Update | - |
| article xml file uploaded | 29 October 2019 12:37 CET | Update | - |
| article pdf uploaded. | 4 October 2019 12:15 CEST | Version of Record | https://www.mdpi.com/2227-7102/9/4/253/pdf-vor |
| article xml file uploaded | 4 October 2019 12:15 CEST | Original file | - |
