| article html file updated | 31 August 2025 05:56 CEST | Update | https://www.mdpi.com/2297-8739/6/4/56 |
| article html file updated | 19 July 2022 22:18 CEST | Update | - |
| article html file updated | 14 February 2020 16:33 CET | Update | - |
| article html file updated | 31 December 2019 03:05 CET | Update | - |
| article html file updated | 17 December 2019 02:28 CET | Original file | - |
| article pdf uploaded. | 17 December 2019 02:27 CET | Updated version of record | https://www.mdpi.com/2297-8739/6/4/56/pdf |
| article xml uploaded. | 17 December 2019 02:27 CET | Update | https://www.mdpi.com/2297-8739/6/4/56/xml |
| article xml file uploaded | 17 December 2019 02:27 CET | Update | - |
| article pdf uploaded. | 6 December 2019 13:14 CET | Version of Record | https://www.mdpi.com/2297-8739/6/4/56/pdf-vor |
| article xml file uploaded | 6 December 2019 13:14 CET | Original file | - |
