| article html file updated | 8 February 2020 08:42 CET | Update | https://www.mdpi.com/1424-8220/17/6/1438 |
| article html file updated | 25 September 2019 10:35 CEST | Update | - |
| article html file updated | 3 May 2019 16:41 CEST | Update | - |
| article html file updated | 30 June 2017 12:03 CEST | Update | - |
| article html file updated | 21 June 2017 04:47 CEST | Original file | - |
| article xml uploaded. | 21 June 2017 04:46 CEST | Original file | https://www.mdpi.com/1424-8220/17/6/1438/xml |
| article pdf uploaded. | 21 June 2017 04:46 CEST | Updated version of record | https://www.mdpi.com/1424-8220/17/6/1438/pdf |
| article pdf uploaded. | 19 June 2017 12:37 CEST | Version of Record | https://www.mdpi.com/1424-8220/17/6/1438/pdf-vor |
