| article html file updated | 8 February 2020 23:00 CET | Update | https://www.mdpi.com/2073-4360/9/12/669 |
| article html file updated | 28 September 2019 23:01 CEST | Update | - |
| article html file updated | 2 May 2019 10:57 CEST | Update | - |
| article html file updated | 18 April 2019 08:34 CEST | Update | - |
| article html file updated | 2 January 2018 14:37 CET | Update | - |
| article html file updated | 3 December 2017 15:07 CET | Original file | - |
| article xml uploaded. | 3 December 2017 15:05 CET | Update | https://www.mdpi.com/2073-4360/9/12/669/xml |
| article xml uploaded. | 3 December 2017 15:05 CET | Original file | - |
| article pdf uploaded. | 3 December 2017 15:05 CET | Version of Record | https://www.mdpi.com/2073-4360/9/12/669/pdf |
