| article html file updated | 8 February 2020 19:10 CET | Update | https://www.mdpi.com/2297-8747/22/4/41 |
| article html file updated | 2 May 2019 19:38 CEST | Update | - |
| article html file updated | 24 October 2017 13:10 CEST | Original file | - |
| article xml uploaded. | 24 October 2017 13:08 CEST | Update | https://www.mdpi.com/2297-8747/22/4/41/xml |
| article xml uploaded. | 24 October 2017 13:08 CEST | Original file | - |
| article pdf uploaded. | 24 October 2017 13:08 CEST | Updated version of record | https://www.mdpi.com/2297-8747/22/4/41/pdf |
| article pdf uploaded. | 23 October 2017 12:10 CEST | Version of Record | https://www.mdpi.com/2297-8747/22/4/41/pdf-vor |
