| article html file updated | 8 February 2020 22:56 CET | Update | https://www.mdpi.com/2079-4991/7/12/421 |
| article html file updated | 28 September 2019 22:37 CEST | Update | - |
| article html file updated | 2 May 2019 11:05 CEST | Update | - |
| article html file updated | 18 April 2019 08:43 CEST | Update | - |
| article html file updated | 2 January 2018 14:57 CET | Update | - |
| article html file updated | 2 December 2017 11:19 CET | Original file | - |
| article xml uploaded. | 2 December 2017 11:18 CET | Original file | https://www.mdpi.com/2079-4991/7/12/421/xml |
| article pdf uploaded. | 2 December 2017 11:18 CET | Version of Record | https://www.mdpi.com/2079-4991/7/12/421/pdf |
