| article html file updated | 8 February 2020 04:13 CET | Update | https://www.mdpi.com/1424-8220/17/4/931 |
| article html file updated | 24 September 2019 11:24 CEST | Update | - |
| article html file updated | 4 May 2019 01:02 CEST | Update | - |
| article html file updated | 29 April 2017 13:24 CEST | Update | - |
| article html file updated | 23 April 2017 10:38 CEST | Original file | - |
| article xml uploaded. | 23 April 2017 10:36 CEST | Update | https://www.mdpi.com/1424-8220/17/4/931/xml |
| article pdf uploaded. | 23 April 2017 10:36 CEST | Version of Record | https://www.mdpi.com/1424-8220/17/4/931/pdf |
