| article html file updated | 9 February 2020 18:39 CET | Update | https://www.mdpi.com/1424-8220/18/6/1668 |
| article html file updated | 3 October 2019 20:50 CEST | Update | - |
| article html file updated | 30 April 2019 17:33 CEST | Update | - |
| article html file updated | 16 April 2019 17:59 CEST | Update | - |
| article html file updated | 30 March 2019 03:36 CET | Update | - |
| article html file updated | 23 May 2018 06:17 CEST | Original file | - |
| article pdf uploaded. | 23 May 2018 06:15 CEST | Version of Record | https://www.mdpi.com/1424-8220/18/6/1668/pdf |
| article xml uploaded. | 23 May 2018 06:15 CEST | Update | https://www.mdpi.com/1424-8220/18/6/1668/xml |
| article xml file uploaded | 23 May 2018 06:15 CEST | Original file | - |
