| article html file updated | 7 February 2020 14:31 CET | Update | https://www.mdpi.com/1424-8220/16/9/1439 |
| article html file updated | 5 May 2019 04:56 CEST | Update | - |
| article html file updated | 27 September 2016 07:05 CEST | Update | - |
| article html file updated | 6 September 2016 11:53 CEST | Original file | - |
| article xml uploaded. | 6 September 2016 11:52 CEST | Update | https://www.mdpi.com/1424-8220/16/9/1439/xml |
| article xml uploaded. | 6 September 2016 11:52 CEST | Original file | - |
| article pdf uploaded. | 6 September 2016 11:52 CEST | Version of Record | https://www.mdpi.com/1424-8220/16/9/1439/pdf |
