| article html file updated | 8 February 2020 03:34 CET | Update | https://www.mdpi.com/1424-8220/17/4/688 |
| article html file updated | 24 September 2019 07:38 CEST | Update | - |
| article html file updated | 4 May 2019 02:15 CEST | Update | - |
| article html file updated | 29 April 2017 13:32 CEST | Update | - |
| article html file updated | 14 April 2017 06:25 CEST | Original file | - |
| article xml uploaded. | 14 April 2017 06:24 CEST | Original file | https://www.mdpi.com/1424-8220/17/4/688/xml |
| article pdf uploaded. | 14 April 2017 06:24 CEST | Version of Record | https://www.mdpi.com/1424-8220/17/4/688/pdf |
