| article html file updated | 9 February 2020 05:22 CET | Update | https://www.mdpi.com/1424-8220/18/2/439 |
| article html file updated | 30 September 2019 11:45 CEST | Update | - |
| article html file updated | 1 May 2019 21:20 CEST | Update | - |
| article html file updated | 17 April 2019 20:13 CEST | Update | - |
| article html file updated | 28 March 2019 20:34 CET | Update | - |
| article html file updated | 14 March 2018 18:57 CET | Update | - |
| article html file updated | 2 February 2018 14:45 CET | Original file | - |
| article xml uploaded. | 2 February 2018 14:44 CET | Update | https://www.mdpi.com/1424-8220/18/2/439/xml |
| article xml uploaded. | 2 February 2018 14:44 CET | Update | - |
| article xml uploaded. | 2 February 2018 14:44 CET | Original file | - |
| article pdf uploaded. | 2 February 2018 14:44 CET | Version of Record | https://www.mdpi.com/1424-8220/18/2/439/pdf |
