| article html file updated | 7 February 2020 15:26 CET | Update | https://www.mdpi.com/2297-8747/21/4/40 |
| article html file updated | 5 May 2019 03:19 CEST | Update | N/A |
| article html file updated | 27 September 2016 11:48 CEST | Update | N/A |
| article xml uploaded. | 27 September 2016 11:43 CEST | Update | https://www.mdpi.com/2297-8747/21/4/40/xml |
| article xml uploaded. | 27 September 2016 11:42 CEST | Update | N/A |
| article pdf uploaded. | 27 September 2016 11:42 CEST | Updated version of record | https://www.mdpi.com/2297-8747/21/4/40/pdf |
| article html file updated | 26 September 2016 12:15 CEST | Original file | N/A |
| article xml uploaded. | 26 September 2016 11:58 CEST | Original file | N/A |
| article pdf uploaded. | 26 September 2016 11:58 CEST | Updated version of record | https://www.mdpi.com/2297-8747/21/4/40/pdf-vor |
| article pdf uploaded. | 23 September 2016 15:13 CEST | Version of Record | https://www.mdpi.com/2297-8747/21/4/40/pdf-vor |
