| article html file updated | 7 February 2020 20:41 CET | Update | https://www.mdpi.com/1996-1944/10/1/12 |
| article html file updated | 22 September 2019 17:19 CEST | Update | - |
| article html file updated | 4 May 2019 17:01 CEST | Update | - |
| article html file updated | 23 February 2017 02:29 CET | Update | - |
| article html file updated | 8 February 2017 08:42 CET | Original file | - |
| article xml uploaded. | 2 January 2017 14:13 CET | Original file | https://www.mdpi.com/1996-1944/10/1/12/xml |
| article pdf uploaded. | 2 January 2017 14:13 CET | Version of Record | https://www.mdpi.com/1996-1944/10/1/12/pdf |
