| article html file updated | 7 February 2020 18:36 CET | Update | https://www.mdpi.com/1424-8220/16/12/1999 |
| article html file updated | 4 May 2019 21:21 CEST | Update | - |
| article html file updated | 27 December 2016 12:39 CET | Update | - |
| article html file updated | 25 November 2016 11:03 CET | Original file | - |
| article xml uploaded. | 25 November 2016 11:02 CET | Update | https://www.mdpi.com/1424-8220/16/12/1999/xml |
| article xml uploaded. | 25 November 2016 11:02 CET | Original file | - |
| article pdf uploaded. | 25 November 2016 11:02 CET | Version of Record | https://www.mdpi.com/1424-8220/16/12/1999/pdf |
