| article html file updated | 8 February 2020 03:14 CET | Update | https://www.mdpi.com/1424-8220/17/4/818 |
| article html file updated | 24 September 2019 05:48 CEST | Update | - |
| article html file updated | 4 May 2019 02:54 CEST | Update | - |
| article html file updated | 29 April 2017 14:03 CEST | Update | - |
| article html file updated | 11 April 2017 14:20 CEST | Original file | - |
| article xml uploaded. | 11 April 2017 14:19 CEST | Update | https://www.mdpi.com/1424-8220/17/4/818/xml |
| article pdf uploaded. | 11 April 2017 14:19 CEST | Updated version of record | https://www.mdpi.com/1424-8220/17/4/818/pdf |
| article pdf uploaded. | 10 April 2017 09:39 CEST | Version of Record | https://www.mdpi.com/1424-8220/17/4/818/pdf-vor |
