| article html file updated | 7 February 2020 23:39 CET | Update | https://www.mdpi.com/1424-8220/17/2/391 |
| article html file updated | 23 September 2019 09:24 CEST | Update | - |
| article html file updated | 4 May 2019 10:44 CEST | Update | - |
| article html file updated | 2 March 2017 11:40 CET | Update | - |
| article html file updated | 17 February 2017 11:29 CET | Original file | - |
| article xml uploaded. | 17 February 2017 11:27 CET | Original file | https://www.mdpi.com/1424-8220/17/2/391/xml |
| article pdf uploaded. | 17 February 2017 11:27 CET | Version of Record | https://www.mdpi.com/1424-8220/17/2/391/pdf |
