| article html file updated | 8 February 2020 08:46 CET | Update | https://www.mdpi.com/2071-1050/9/6/1068 |
| article html file updated | 25 September 2019 10:57 CEST | Update | - |
| article html file updated | 3 May 2019 16:32 CEST | Update | - |
| article html file updated | 28 June 2017 14:53 CEST | Update | - |
| article html file updated | 20 June 2017 13:09 CEST | Original file | - |
| article xml uploaded. | 20 June 2017 13:08 CEST | Original file | https://www.mdpi.com/2071-1050/9/6/1068/xml |
| article pdf uploaded. | 20 June 2017 13:08 CEST | Version of Record | https://www.mdpi.com/2071-1050/9/6/1068/pdf |
