| article html file updated | 7 February 2020 19:38 CET | Update | https://www.mdpi.com/1996-1944/9/12/998 |
| article html file updated | 22 September 2019 11:37 CEST | Update | - |
| article html file updated | 4 May 2019 19:11 CEST | Update | - |
| article html file updated | 28 December 2016 10:43 CET | Update | - |
| article html file updated | 14 December 2016 12:11 CET | Original file | - |
| article xml uploaded. | 14 December 2016 12:10 CET | Original file | https://www.mdpi.com/1996-1944/9/12/998/xml |
| article pdf uploaded. | 14 December 2016 12:10 CET | Version of Record | https://www.mdpi.com/1996-1944/9/12/998/pdf |
