| article html file updated | 7 February 2020 04:50 CET | Update | https://www.mdpi.com/1424-8220/16/2/268 |
| article html file updated | 5 May 2019 23:42 CEST | Update | - |
| article html file updated | 26 March 2019 21:19 CET | Original file | - |
| article pdf uploaded. | 22 February 2016 09:49 CET | Version of Record | https://www.mdpi.com/1424-8220/16/2/268/pdf |
| article xml uploaded. | 22 February 2016 09:49 CET | Original file | https://www.mdpi.com/1424-8220/16/2/268/xml |
