| article html file updated | 8 February 2020 06:55 CET | Update | https://www.mdpi.com/2071-1050/9/6/908 |
| article html file updated | 25 September 2019 01:25 CEST | Update | - |
| article html file updated | 3 May 2019 20:01 CEST | Update | - |
| article html file updated | 28 June 2017 14:34 CEST | Update | - |
| article html file updated | 30 May 2017 11:39 CEST | Original file | - |
| article xml uploaded. | 30 May 2017 11:38 CEST | Original file | https://www.mdpi.com/2071-1050/9/6/908/xml |
| article pdf uploaded. | 30 May 2017 11:38 CEST | Updated version of record | https://www.mdpi.com/2071-1050/9/6/908/pdf |
| article pdf uploaded. | 28 May 2017 07:55 CEST | Version of Record | https://www.mdpi.com/2071-1050/9/6/908/pdf-vor |
