| article html file updated | 7 February 2020 21:18 CET | Update | https://www.mdpi.com/2297-8747/22/1/6 |
| article html file updated | 4 May 2019 15:42 CEST | Update | N/A |
| article pdf uploaded. | 13 January 2017 10:23 CET | Updated version of record | https://www.mdpi.com/2297-8747/22/1/6/pdf |
| article html file updated | 12 January 2017 08:26 CET | Update | N/A |
| article html file updated | 12 January 2017 08:26 CET | Update | N/A |
| article html file updated | 12 January 2017 08:26 CET | Original file | N/A |
| article xml uploaded. | 12 January 2017 08:25 CET | Original file | https://www.mdpi.com/2297-8747/22/1/6/xml |
| article pdf uploaded. | 12 January 2017 08:25 CET | Version of Record | https://www.mdpi.com/2297-8747/22/1/6/pdf-vor |
