| article html file updated | 8 February 2020 08:02 CET | Update | https://www.mdpi.com/2071-1050/9/6/1009 |
| article html file updated | 25 September 2019 07:05 CEST | Update | - |
| article html file updated | 3 May 2019 17:55 CEST | Update | - |
| article html file updated | 28 June 2017 14:46 CEST | Update | - |
| article html file updated | 12 June 2017 10:05 CEST | Original file | - |
| article xml uploaded. | 12 June 2017 10:04 CEST | Original file | https://www.mdpi.com/2071-1050/9/6/1009/xml |
| article pdf uploaded. | 12 June 2017 10:04 CEST | Updated version of record | https://www.mdpi.com/2071-1050/9/6/1009/pdf |
| article pdf uploaded. | 11 June 2017 10:36 CEST | Version of Record | https://www.mdpi.com/2071-1050/9/6/1009/pdf-vor |
