| article html file updated | 7 February 2020 04:05 CET | Update | https://www.mdpi.com/1424-8220/16/2/173 |
| article html file updated | 6 May 2019 01:20 CEST | Update | - |
| article html file updated | 26 March 2019 19:44 CET | Original file | - |
| article pdf uploaded. | 1 February 2016 13:00 CET | Updated version of record | https://www.mdpi.com/1424-8220/16/2/173/pdf |
| article xml uploaded. | 1 February 2016 13:00 CET | Update | https://www.mdpi.com/1424-8220/16/2/173/xml |
| article pdf uploaded. | 29 January 2016 12:04 CET | Version of Record | https://www.mdpi.com/1424-8220/16/2/173/pdf-vor |
| article xml uploaded. | 29 January 2016 12:04 CET | Original file | - |
