| article html file updated | 8 February 2020 03:58 CET | Update | https://www.mdpi.com/1424-8220/17/4/904 |
| article html file updated | 24 September 2019 10:03 CEST | Update | - |
| article html file updated | 4 May 2019 01:29 CEST | Update | - |
| article html file updated | 29 April 2017 14:24 CEST | Update | - |
| article html file updated | 20 April 2017 10:54 CEST | Original file | - |
| article xml uploaded. | 20 April 2017 10:53 CEST | Update | https://www.mdpi.com/1424-8220/17/4/904/xml |
| article pdf uploaded. | 20 April 2017 10:53 CEST | Version of Record | https://www.mdpi.com/1424-8220/17/4/904/pdf |
