| article html file updated | 7 February 2020 04:41 CET | Update | https://www.mdpi.com/1424-8220/16/2/240 |
| article html file updated | 6 May 2019 00:03 CEST | Update | - |
| article html file updated | 26 March 2019 20:59 CET | Original file | - |
| article pdf uploaded. | 18 February 2016 10:39 CET | Version of Record | https://www.mdpi.com/1424-8220/16/2/240/pdf |
| article xml uploaded. | 18 February 2016 10:39 CET | Original file | https://www.mdpi.com/1424-8220/16/2/240/xml |
