| article html file updated | 8 February 2020 02:59 CET | Update | https://www.mdpi.com/2071-1050/9/4/558 |
| article html file updated | 24 September 2019 04:28 CEST | Update | - |
| article html file updated | 4 May 2019 03:23 CEST | Update | - |
| article html file updated | 28 April 2017 10:55 CEST | Update | - |
| article html file updated | 9 April 2017 03:21 CEST | Original file | - |
| article xml uploaded. | 9 April 2017 03:20 CEST | Original file | https://www.mdpi.com/2071-1050/9/4/558/xml |
| article pdf uploaded. | 9 April 2017 03:20 CEST | Updated version of record | https://www.mdpi.com/2071-1050/9/4/558/pdf |
| article pdf uploaded. | 6 April 2017 11:01 CEST | Version of Record | https://www.mdpi.com/2071-1050/9/4/558/pdf-vor |
