| article html file updated | 9 February 2020 07:27 CET | Update | https://www.mdpi.com/1424-8220/18/2/664 |
| article html file updated | 1 October 2019 00:04 CEST | Update | - |
| article html file updated | 1 May 2019 16:44 CEST | Update | - |
| article html file updated | 17 April 2019 16:07 CEST | Update | - |
| article html file updated | 29 March 2019 01:03 CET | Update | - |
| article html file updated | 14 March 2018 20:10 CET | Update | - |
| article html file updated | 24 February 2018 03:50 CET | Original file | - |
| article xml uploaded. | 24 February 2018 03:49 CET | Update | https://www.mdpi.com/1424-8220/18/2/664/xml |
| article xml uploaded. | 24 February 2018 03:49 CET | Original file | - |
| article pdf uploaded. | 24 February 2018 03:49 CET | Version of Record | https://www.mdpi.com/1424-8220/18/2/664/pdf |
