| article html file updated | 8 February 2020 22:00 CET | Update | https://www.mdpi.com/2077-1444/8/12/257 |
| article html file updated | 28 September 2019 16:45 CEST | Update | - |
| article html file updated | 2 May 2019 13:10 CEST | Update | - |
| article html file updated | 18 April 2019 10:49 CEST | Update | - |
| article html file updated | 2 January 2018 15:39 CET | Update | - |
| article html file updated | 24 November 2017 10:38 CET | Original file | - |
| article xml uploaded. | 24 November 2017 10:37 CET | Original file | https://www.mdpi.com/2077-1444/8/12/257/xml |
| article pdf uploaded. | 24 November 2017 10:37 CET | Updated version of record | https://www.mdpi.com/2077-1444/8/12/257/pdf |
| article pdf uploaded. | 23 November 2017 11:44 CET | Version of Record | https://www.mdpi.com/2077-1444/8/12/257/pdf-vor |
