| article html file updated | 8 February 2020 04:16 CET | Update | https://www.mdpi.com/2071-1050/9/4/674 |
| article html file updated | 24 September 2019 11:41 CEST | Update | - |
| article html file updated | 4 May 2019 00:57 CEST | Update | - |
| article html file updated | 28 April 2017 11:13 CEST | Update | - |
| article html file updated | 24 April 2017 13:44 CEST | Original file | - |
| article xml uploaded. | 24 April 2017 13:43 CEST | Original file | https://www.mdpi.com/2071-1050/9/4/674/xml |
| article pdf uploaded. | 24 April 2017 13:43 CEST | Version of Record | https://www.mdpi.com/2071-1050/9/4/674/pdf |
