| article html file updated | 7 February 2020 06:19 CET | Update | https://www.mdpi.com/1424-8220/16/4/427 |
| article html file updated | 5 May 2019 20:36 CEST | Update | - |
| article html file updated | 27 March 2019 00:10 CET | Update | - |
| article html file updated | 29 April 2016 04:10 CEST | Original file | - |
| article xml uploaded. | 24 March 2016 09:47 CET | Update | https://www.mdpi.com/1424-8220/16/4/427/xml |
| article pdf uploaded. | 24 March 2016 09:47 CET | Updated version of record | https://www.mdpi.com/1424-8220/16/4/427/pdf |
| article pdf uploaded. | 24 March 2016 09:47 CET | Version of Record | https://www.mdpi.com/1424-8220/16/4/427/pdf-vor |
