| article html file updated | 7 February 2020 17:20 CET | Update | https://www.mdpi.com/1996-1944/9/11/881 |
| article html file updated | 4 May 2019 23:49 CEST | Update | - |
| article html file updated | 30 November 2016 05:29 CET | Update | - |
| article html file updated | 1 November 2016 10:41 CET | Original file | - |
| article xml uploaded. | 1 November 2016 10:40 CET | Update | https://www.mdpi.com/1996-1944/9/11/881/xml |
| article xml uploaded. | 1 November 2016 10:40 CET | Original file | - |
| article pdf uploaded. | 1 November 2016 10:40 CET | Version of Record | https://www.mdpi.com/1996-1944/9/11/881/pdf |
