| article html file updated | 8 February 2020 02:51 CET | Update | https://www.mdpi.com/1424-8220/17/4/764 |
| article html file updated | 24 September 2019 03:45 CEST | Update | - |
| article html file updated | 4 May 2019 03:42 CEST | Update | - |
| article html file updated | 29 April 2017 13:50 CEST | Update | - |
| article html file updated | 4 April 2017 12:25 CEST | Original file | - |
| article xml uploaded. | 4 April 2017 12:24 CEST | Update | https://www.mdpi.com/1424-8220/17/4/764/xml |
| article pdf uploaded. | 4 April 2017 12:24 CEST | Version of Record | https://www.mdpi.com/1424-8220/17/4/764/pdf |
