| article html file updated | 8 February 2020 03:16 CET | Update | https://www.mdpi.com/2071-1050/9/4/574 |
| article html file updated | 24 September 2019 06:02 CEST | Update | - |
| article html file updated | 4 May 2019 02:49 CEST | Update | - |
| article html file updated | 28 April 2017 10:59 CEST | Update | - |
| article html file updated | 10 April 2017 13:53 CEST | Original file | - |
| article xml uploaded. | 10 April 2017 13:52 CEST | Update | https://www.mdpi.com/2071-1050/9/4/574/xml |
| article pdf uploaded. | 10 April 2017 13:52 CEST | Version of Record | https://www.mdpi.com/2071-1050/9/4/574/pdf |
