| article html file updated | 7 February 2020 15:20 CET | Update | https://www.mdpi.com/1424-8220/16/9/1550 |
| article html file updated | 5 May 2019 03:28 CEST | Update | - |
| article html file updated | 27 September 2016 07:47 CEST | Update | - |
| article html file updated | 21 September 2016 12:43 CEST | Original file | - |
| article xml uploaded. | 21 September 2016 12:42 CEST | Update | https://www.mdpi.com/1424-8220/16/9/1550/xml |
| article xml uploaded. | 21 September 2016 12:42 CEST | Original file | - |
| article pdf uploaded. | 21 September 2016 12:42 CEST | Version of Record | https://www.mdpi.com/1424-8220/16/9/1550/pdf |
