| article html file updated | 8 February 2020 03:13 CET | Update | https://www.mdpi.com/2071-1050/9/4/571 |
| article html file updated | 24 September 2019 05:44 CEST | Update | - |
| article html file updated | 4 May 2019 02:55 CEST | Update | - |
| article html file updated | 28 April 2017 10:57 CEST | Update | - |
| article html file updated | 9 April 2017 12:28 CEST | Original file | - |
| article xml uploaded. | 9 April 2017 12:27 CEST | Original file | https://www.mdpi.com/2071-1050/9/4/571/xml |
| article pdf uploaded. | 9 April 2017 12:27 CEST | Version of Record | https://www.mdpi.com/2071-1050/9/4/571/pdf |
