| article html file updated | 7 February 2020 15:00 CET | Update | https://www.mdpi.com/2071-1050/8/9/940 |
| article html file updated | 5 May 2019 04:04 CEST | Update | - |
| article html file updated | 27 September 2016 05:25 CEST | Update | - |
| article html file updated | 14 September 2016 11:54 CEST | Original file | - |
| article xml uploaded. | 14 September 2016 11:53 CEST | Update | https://www.mdpi.com/2071-1050/8/9/940/xml |
| article xml uploaded. | 14 September 2016 11:53 CEST | Original file | - |
| article pdf uploaded. | 14 September 2016 11:53 CEST | Version of Record | https://www.mdpi.com/2071-1050/8/9/940/pdf |
