| article html file updated | 8 February 2020 08:42 CET | Update | https://www.mdpi.com/1424-8220/17/6/1439 |
| article html file updated | 25 September 2019 10:37 CEST | Update | - |
| article html file updated | 3 May 2019 16:40 CEST | Update | - |
| article html file updated | 30 June 2017 12:03 CEST | Update | - |
| article html file updated | 20 June 2017 05:56 CEST | Original file | - |
| article xml uploaded. | 20 June 2017 05:54 CEST | Original file | https://www.mdpi.com/1424-8220/17/6/1439/xml |
| article pdf uploaded. | 20 June 2017 05:54 CEST | Updated version of record | https://www.mdpi.com/1424-8220/17/6/1439/pdf |
| article pdf uploaded. | 19 June 2017 13:00 CEST | Version of Record | https://www.mdpi.com/1424-8220/17/6/1439/pdf-vor |
