| article html file updated | 7 February 2020 23:27 CET | Update | https://www.mdpi.com/2297-8747/22/1/19 |
| article html file updated | 23 September 2019 08:14 CEST | Update | - |
| article html file updated | 4 May 2019 11:08 CEST | Update | - |
| article html file updated | 16 February 2017 12:22 CET | Original file | - |
| article xml uploaded. | 16 February 2017 12:20 CET | Original file | https://www.mdpi.com/2297-8747/22/1/19/xml |
| article pdf uploaded. | 16 February 2017 12:20 CET | Updated version of record | https://www.mdpi.com/2297-8747/22/1/19/pdf |
| article pdf uploaded. | 15 February 2017 10:39 CET | Version of Record | https://www.mdpi.com/2297-8747/22/1/19/pdf-vor |
