| article html file updated | 7 February 2020 09:43 CET | Update | https://www.mdpi.com/1424-8220/16/6/818 |
| article html file updated | 5 May 2019 13:47 CEST | Update | - |
| article html file updated | 27 March 2019 06:38 CET | Update | - |
| article html file updated | 29 June 2016 10:28 CEST | Update | - |
| article html file updated | 3 June 2016 11:14 CEST | Original file | - |
| article xml uploaded. | 3 June 2016 11:12 CEST | Original file | https://www.mdpi.com/1424-8220/16/6/818/xml |
| article pdf uploaded. | 3 June 2016 11:12 CEST | Version of Record | https://www.mdpi.com/1424-8220/16/6/818/pdf |
