| article html file updated | 7 February 2020 21:23 CET | Update | https://www.mdpi.com/2079-4991/7/1/15 |
| article html file updated | 22 September 2019 20:53 CEST | Update | - |
| article html file updated | 4 May 2019 15:30 CEST | Update | - |
| article html file updated | 7 February 2017 13:00 CET | Update | - |
| article html file updated | 13 January 2017 08:25 CET | Original file | - |
| article xml uploaded. | 13 January 2017 08:23 CET | Update | https://www.mdpi.com/2079-4991/7/1/15/xml |
| article xml uploaded. | 13 January 2017 08:23 CET | Original file | - |
| article pdf uploaded. | 13 January 2017 08:23 CET | Version of Record | https://www.mdpi.com/2079-4991/7/1/15/pdf |
