| article html file updated | 8 February 2020 08:20 CET | Update | https://www.mdpi.com/2071-1050/9/6/1031 |
| article html file updated | 3 May 2019 17:22 CEST | Update | - |
| article html file updated | 28 June 2017 14:49 CEST | Update | - |
| article html file updated | 19 June 2017 13:25 CEST | Original file | - |
| article xml uploaded. | 19 June 2017 13:24 CEST | Original file | https://www.mdpi.com/2071-1050/9/6/1031/xml |
| article pdf uploaded. | 19 June 2017 13:24 CEST | Updated version of record | https://www.mdpi.com/2071-1050/9/6/1031/pdf |
| article pdf uploaded. | 15 June 2017 15:21 CEST | Version of Record | https://www.mdpi.com/2071-1050/9/6/1031/pdf-vor |
