| article html file updated | 7 February 2020 04:47 CET | Update | https://www.mdpi.com/1424-8220/16/2/260 |
| article html file updated | 5 May 2019 23:49 CEST | Update | - |
| article html file updated | 26 March 2019 21:12 CET | Original file | - |
| article pdf uploaded. | 19 February 2016 14:04 CET | Version of Record | https://www.mdpi.com/1424-8220/16/2/260/pdf |
| article xml uploaded. | 19 February 2016 14:04 CET | Original file | https://www.mdpi.com/1424-8220/16/2/260/xml |
