| article html file updated | 8 February 2020 03:15 CET | Update | https://www.mdpi.com/1424-8220/17/4/815 |
| article html file updated | 24 September 2019 05:58 CEST | Update | - |
| article html file updated | 4 May 2019 02:50 CEST | Update | - |
| article html file updated | 29 April 2017 14:03 CEST | Update | - |
| article html file updated | 10 April 2017 12:23 CEST | Original file | - |
| article xml uploaded. | 10 April 2017 12:22 CEST | Original file | https://www.mdpi.com/1424-8220/17/4/815/xml |
| article pdf uploaded. | 10 April 2017 12:22 CEST | Version of Record | https://www.mdpi.com/1424-8220/17/4/815/pdf |
