| article html file updated | 8 February 2020 03:45 CET | Update | https://www.mdpi.com/2071-1050/9/4/622 |
| article html file updated | 24 September 2019 08:45 CEST | Update | - |
| article html file updated | 4 May 2019 01:53 CEST | Update | - |
| article html file updated | 28 April 2017 11:06 CEST | Update | - |
| article html file updated | 17 April 2017 14:25 CEST | Original file | - |
| article xml uploaded. | 17 April 2017 14:24 CEST | Original file | https://www.mdpi.com/2071-1050/9/4/622/xml |
| article pdf uploaded. | 17 April 2017 14:24 CEST | Version of Record | https://www.mdpi.com/2071-1050/9/4/622/pdf |
