| article html file updated | 7 February 2020 04:32 CET | Update | https://www.mdpi.com/1424-8220/16/2/228 |
| article html file updated | 6 May 2019 00:25 CEST | Update | - |
| article html file updated | 26 March 2019 20:40 CET | Original file | - |
| article pdf uploaded. | 15 February 2016 10:29 CET | Version of Record | https://www.mdpi.com/1424-8220/16/2/228/pdf |
| article xml uploaded. | 15 February 2016 10:29 CET | Original file | https://www.mdpi.com/1424-8220/16/2/228/xml |
