| article html file updated | 8 February 2020 08:22 CET | Update | https://www.mdpi.com/1424-8220/17/6/1406 |
| article html file updated | 25 September 2019 08:52 CEST | Update | - |
| article html file updated | 3 May 2019 17:19 CEST | Update | - |
| article html file updated | 30 June 2017 11:57 CEST | Update | - |
| article html file updated | 15 June 2017 16:24 CEST | Original file | - |
| article xml uploaded. | 15 June 2017 16:23 CEST | Update | https://www.mdpi.com/1424-8220/17/6/1406/xml |
| article pdf uploaded. | 15 June 2017 16:23 CEST | Updated version of record | https://www.mdpi.com/1424-8220/17/6/1406/pdf |
