| article html file updated | 8 February 2020 03:18 CET | Update | https://www.mdpi.com/1424-8220/17/4/831 |
| article html file updated | 24 September 2019 06:13 CEST | Update | - |
| article html file updated | 4 May 2019 02:45 CEST | Update | - |
| article html file updated | 29 April 2017 14:06 CEST | Update | - |
| article html file updated | 11 April 2017 08:27 CEST | Original file | - |
| article xml uploaded. | 11 April 2017 08:26 CEST | Update | https://www.mdpi.com/1424-8220/17/4/831/xml |
| article pdf uploaded. | 11 April 2017 08:26 CEST | Version of Record | https://www.mdpi.com/1424-8220/17/4/831/pdf |
