| article html file updated | 7 February 2020 08:25 CET | Update | https://www.mdpi.com/2297-8747/21/2/16 |
| article html file updated | 5 May 2019 16:21 CEST | Update | - |
| article html file updated | 27 March 2019 04:10 CET | Update | - |
| article html file updated | 13 May 2016 07:53 CEST | Original file | - |
| article xml uploaded. | 13 May 2016 07:52 CEST | Update | https://www.mdpi.com/2297-8747/21/2/16/xml |
| article pdf uploaded. | 13 May 2016 07:52 CEST | Updated version of record | https://www.mdpi.com/2297-8747/21/2/16/pdf |
| article pdf uploaded. | 10 May 2016 10:29 CEST | Version of Record | https://www.mdpi.com/2297-8747/21/2/16/pdf-vor |
