| article html file updated | 7 February 2020 22:48 CET | Update | https://www.mdpi.com/1424-8220/17/2/303 |
| article html file updated | 23 September 2019 04:39 CEST | Update | - |
| article html file updated | 4 May 2019 12:26 CEST | Update | - |
| article html file updated | 2 March 2017 11:23 CET | Update | - |
| article html file updated | 7 February 2017 11:22 CET | Original file | - |
| article xml uploaded. | 7 February 2017 11:21 CET | Original file | https://www.mdpi.com/1424-8220/17/2/303/xml |
| article pdf uploaded. | 7 February 2017 11:21 CET | Version of Record | https://www.mdpi.com/1424-8220/17/2/303/pdf |
