| article html file updated | 31 August 2025 06:07 CEST | Update | https://www.mdpi.com/2224-2708/8/4/56 |
| article html file updated | 19 July 2022 22:07 CEST | Update | - |
| article html file updated | 14 February 2020 17:11 CET | Update | - |
| article html file updated | 31 December 2019 19:19 CET | Update | - |
| article html file updated | 18 December 2019 13:33 CET | Update | - |
| article pdf uploaded. | 18 December 2019 13:32 CET | Updated version of record | https://www.mdpi.com/2224-2708/8/4/56/pdf |
| article xml uploaded. | 18 December 2019 13:32 CET | Update | https://www.mdpi.com/2224-2708/8/4/56/xml |
| article xml file uploaded | 18 December 2019 13:32 CET | Update | - |
| article html file updated | 17 December 2019 13:23 CET | Original file | - |
| article pdf uploaded. | 17 December 2019 13:22 CET | Updated version of record | https://www.mdpi.com/2224-2708/8/4/56/pdf-vor |
| article xml uploaded. | 17 December 2019 13:22 CET | Update | - |
| article xml file uploaded | 17 December 2019 13:22 CET | Update | - |
| article pdf uploaded. | 9 December 2019 15:01 CET | Version of Record | https://www.mdpi.com/2224-2708/8/4/56/pdf-vor |
| article xml file uploaded | 9 December 2019 15:01 CET | Original file | - |
