| article html file updated | 8 February 2020 02:49 CET | Update | https://www.mdpi.com/1424-8220/17/4/754 |
| article html file updated | 24 September 2019 03:30 CEST | Update | - |
| article html file updated | 4 May 2019 03:47 CEST | Update | - |
| article html file updated | 29 April 2017 13:48 CEST | Update | - |
| article html file updated | 5 April 2017 14:35 CEST | Original file | - |
| article xml uploaded. | 5 April 2017 14:33 CEST | Original file | https://www.mdpi.com/1424-8220/17/4/754/xml |
| article pdf uploaded. | 5 April 2017 14:33 CEST | Updated version of record | https://www.mdpi.com/1424-8220/17/4/754/pdf |
| article pdf uploaded. | 2 April 2017 11:55 CEST | Version of Record | https://www.mdpi.com/1424-8220/17/4/754/pdf-vor |
