| article html file updated | 8 February 2020 20:14 CET | Update | https://www.mdpi.com/2297-8747/22/4/44 |
| article html file updated | 28 September 2019 05:02 CEST | Update | - |
| article html file updated | 2 May 2019 17:13 CEST | Update | - |
| article pdf uploaded. | 9 November 2017 09:45 CET | Updated version of record | https://www.mdpi.com/2297-8747/22/4/44/pdf |
| article html file updated | 3 November 2017 12:07 CET | Original file | - |
| article xml uploaded. | 3 November 2017 12:05 CET | Update | https://www.mdpi.com/2297-8747/22/4/44/xml |
| article xml uploaded. | 3 November 2017 12:05 CET | Update | - |
| article xml uploaded. | 3 November 2017 12:05 CET | Original file | - |
| article pdf uploaded. | 3 November 2017 12:05 CET | Version of Record | https://www.mdpi.com/2297-8747/22/4/44/pdf-vor |
