| article html file updated | 7 February 2020 10:05 CET | Update | https://www.mdpi.com/1996-1944/9/6/458 |
| article html file updated | 5 May 2019 13:07 CEST | Update | - |
| article html file updated | 27 March 2019 07:19 CET | Update | - |
| article html file updated | 28 June 2016 12:21 CEST | Update | - |
| article html file updated | 14 June 2016 22:41 CEST | Original file | - |
| article xml uploaded. | 13 June 2016 12:22 CEST | Update | https://www.mdpi.com/1996-1944/9/6/458/xml |
| article pdf uploaded. | 13 June 2016 12:22 CEST | Version of Record | https://www.mdpi.com/1996-1944/9/6/458/pdf |
