| article html file updated | 8 February 2020 03:38 CET | Update | https://www.mdpi.com/1424-8220/17/4/864 |
| article html file updated | 24 September 2019 07:59 CEST | Update | - |
| article html file updated | 4 May 2019 02:08 CEST | Update | - |
| article html file updated | 29 April 2017 14:14 CEST | Update | - |
| article html file updated | 14 April 2017 14:06 CEST | Original file | - |
| article xml uploaded. | 14 April 2017 14:04 CEST | Update | https://www.mdpi.com/1424-8220/17/4/864/xml |
| article pdf uploaded. | 14 April 2017 14:04 CEST | Version of Record | https://www.mdpi.com/1424-8220/17/4/864/pdf |
