| article html file updated | 7 February 2020 15:18 CET | Update | https://www.mdpi.com/1424-8220/16/9/1540 |
| article html file updated | 5 May 2019 03:32 CEST | Update | - |
| article html file updated | 27 September 2016 07:44 CEST | Update | - |
| article html file updated | 21 September 2016 11:00 CEST | Original file | - |
| article xml uploaded. | 21 September 2016 10:58 CEST | Update | https://www.mdpi.com/1424-8220/16/9/1540/xml |
| article xml uploaded. | 21 September 2016 10:58 CEST | Original file | - |
| article pdf uploaded. | 21 September 2016 10:58 CEST | Version of Record | https://www.mdpi.com/1424-8220/16/9/1540/pdf |
