| article html file updated | 8 February 2020 08:19 CET | Update | https://www.mdpi.com/2071-1050/9/6/1020 |
| article html file updated | 25 September 2019 08:36 CEST | Update | - |
| article html file updated | 3 May 2019 17:25 CEST | Update | - |
| article html file updated | 28 June 2017 14:47 CEST | Update | - |
| article html file updated | 14 June 2017 14:30 CEST | Original file | - |
| article xml uploaded. | 14 June 2017 14:29 CEST | Original file | https://www.mdpi.com/2071-1050/9/6/1020/xml |
| article pdf uploaded. | 14 June 2017 14:29 CEST | Version of Record | https://www.mdpi.com/2071-1050/9/6/1020/pdf |
