| article html file updated | 7 February 2020 22:11 CET | Update | https://www.mdpi.com/2297-8747/22/1/13 |
| article html file updated | 4 May 2019 13:41 CEST | Update | - |
| article html file updated | 7 March 2017 11:23 CET | Original file | - |
| article xml uploaded. | 7 March 2017 11:22 CET | Original file | https://www.mdpi.com/2297-8747/22/1/13/xml |
| article pdf uploaded. | 7 March 2017 11:22 CET | Updated version of record | https://www.mdpi.com/2297-8747/22/1/13/pdf |
| article pdf uploaded. | 24 January 2017 13:16 CET | Version of Record | https://www.mdpi.com/2297-8747/22/1/13/pdf-vor |
