| article html file updated | 8 February 2020 07:55 CET | Update | https://www.mdpi.com/2071-1050/9/6/999 |
| article html file updated | 25 September 2019 06:33 CEST | Update | - |
| article html file updated | 3 May 2019 18:07 CEST | Update | - |
| article html file updated | 28 June 2017 14:46 CEST | Update | - |
| article html file updated | 12 June 2017 09:46 CEST | Original file | - |
| article xml uploaded. | 12 June 2017 09:44 CEST | Original file | https://www.mdpi.com/2071-1050/9/6/999/xml |
| article pdf uploaded. | 12 June 2017 09:44 CEST | Updated version of record | https://www.mdpi.com/2071-1050/9/6/999/pdf |
| article pdf uploaded. | 9 June 2017 14:10 CEST | Version of Record | https://www.mdpi.com/2071-1050/9/6/999/pdf-vor |
