| article html file updated | 31 August 2025 03:00 CEST | Update | https://www.mdpi.com/2227-7102/9/4/255 |
| article html file updated | 20 July 2022 01:31 CEST | Update | N/A |
| article html file updated | 14 February 2020 01:23 CET | Update | N/A |
| article html file updated | 25 October 2019 07:46 CEST | Original file | N/A |
| article pdf uploaded. | 25 October 2019 07:45 CEST | Updated version of record | https://www.mdpi.com/2227-7102/9/4/255/pdf |
| article xml uploaded. | 25 October 2019 07:45 CEST | Update | https://www.mdpi.com/2227-7102/9/4/255/xml |
| article xml file uploaded | 25 October 2019 07:45 CEST | Update | N/A |
| article pdf uploaded. | 16 October 2019 12:48 CEST | Version of Record | https://www.mdpi.com/2227-7102/9/4/255/pdf-vor |
| article xml file uploaded | 16 October 2019 12:48 CEST | Original file | N/A |
