| article html file updated | 8 February 2020 22:48 CET | Update | https://www.mdpi.com/2075-4426/7/4/18 |
| article html file updated | 28 September 2019 21:41 CEST | Update | - |
| article html file updated | 2 May 2019 11:24 CEST | Update | - |
| article html file updated | 18 April 2019 09:01 CEST | Update | - |
| article html file updated | 2 January 2018 20:36 CET | Update | - |
| article html file updated | 1 December 2017 12:22 CET | Original file | - |
| article xml uploaded. | 1 December 2017 12:21 CET | Original file | https://www.mdpi.com/2075-4426/7/4/18/xml |
| article pdf uploaded. | 1 December 2017 12:21 CET | Version of Record | https://www.mdpi.com/2075-4426/7/4/18/pdf |
