| article html file updated | 8 February 2020 03:50 CET | Update | https://www.mdpi.com/1424-8220/17/4/891 |
| article html file updated | 24 September 2019 09:14 CEST | Update | - |
| article html file updated | 4 May 2019 01:45 CEST | Update | - |
| article html file updated | 29 April 2017 14:20 CEST | Update | - |
| article html file updated | 21 April 2017 09:48 CEST | Original file | - |
| article xml uploaded. | 21 April 2017 09:47 CEST | Original file | https://www.mdpi.com/1424-8220/17/4/891/xml |
| article pdf uploaded. | 21 April 2017 09:47 CEST | Updated version of record | https://www.mdpi.com/1424-8220/17/4/891/pdf |
| article pdf uploaded. | 18 April 2017 13:48 CEST | Version of Record | https://www.mdpi.com/1424-8220/17/4/891/pdf-vor |
