| article html file updated | 7 February 2020 09:38 CET | Update | https://www.mdpi.com/1424-8220/16/6/809 |
| article html file updated | 5 May 2019 13:57 CEST | Update | - |
| article html file updated | 27 March 2019 06:25 CET | Update | - |
| article html file updated | 29 June 2016 10:26 CEST | Update | - |
| article html file updated | 2 June 2016 09:25 CEST | Original file | - |
| article xml uploaded. | 2 June 2016 09:24 CEST | Original file | https://www.mdpi.com/1424-8220/16/6/809/xml |
| article pdf uploaded. | 2 June 2016 09:24 CEST | Version of Record | https://www.mdpi.com/1424-8220/16/6/809/pdf |
