| article html file updated | 7 February 2020 08:10 CET | Update | https://www.mdpi.com/2297-8747/21/2/14 |
| article html file updated | 5 May 2019 16:50 CEST | Update | N/A |
| article html file updated | 27 March 2019 03:41 CET | Update | N/A |
| article html file updated | 4 May 2016 14:59 CEST | Original file | N/A |
| article xml uploaded. | 4 May 2016 14:57 CEST | Original file | https://www.mdpi.com/2297-8747/21/2/14/xml |
| article pdf uploaded. | 4 May 2016 14:57 CEST | Version of Record | https://www.mdpi.com/2297-8747/21/2/14/pdf |
