| article html file updated | 8 February 2020 07:18 CET | Update | https://www.mdpi.com/2071-1050/9/6/939 |
| article html file updated | 25 September 2019 03:19 CEST | Update | - |
| article html file updated | 3 May 2019 19:18 CEST | Update | - |
| article html file updated | 28 June 2017 14:38 CEST | Update | - |
| article html file updated | 3 June 2017 10:53 CEST | Original file | - |
| article xml uploaded. | 3 June 2017 10:51 CEST | Update | https://www.mdpi.com/2071-1050/9/6/939/xml |
| article pdf uploaded. | 3 June 2017 10:51 CEST | Updated version of record | https://www.mdpi.com/2071-1050/9/6/939/pdf |
| article pdf uploaded. | 2 June 2017 13:15 CEST | Version of Record | https://www.mdpi.com/2071-1050/9/6/939/pdf-vor |
