| article html file updated | 7 February 2020 14:18 CET | Update | https://www.mdpi.com/2071-1050/8/9/870 |
| article html file updated | 5 May 2019 05:21 CEST | Update | - |
| article html file updated | 27 March 2019 15:43 CET | Update | - |
| article html file updated | 27 September 2016 05:13 CEST | Update | - |
| article html file updated | 1 September 2016 12:25 CEST | Original file | - |
| article xml uploaded. | 1 September 2016 12:23 CEST | Update | https://www.mdpi.com/2071-1050/8/9/870/xml |
| article xml uploaded. | 1 September 2016 12:23 CEST | Original file | - |
| article pdf uploaded. | 1 September 2016 12:23 CEST | Version of Record | https://www.mdpi.com/2071-1050/8/9/870/pdf |
