| article html file updated | 8 February 2020 04:16 CET | Update | https://www.mdpi.com/1424-8220/17/4/939 |
| article html file updated | 24 September 2019 11:42 CEST | Update | - |
| article html file updated | 4 May 2019 00:56 CEST | Update | - |
| article html file updated | 29 April 2017 13:26 CEST | Update | - |
| article html file updated | 24 April 2017 13:06 CEST | Original file | - |
| article xml uploaded. | 24 April 2017 13:05 CEST | Update | https://www.mdpi.com/1424-8220/17/4/939/xml |
| article pdf uploaded. | 24 April 2017 13:05 CEST | Version of Record | https://www.mdpi.com/1424-8220/17/4/939/pdf |
