| article html file updated | 7 February 2020 21:17 CET | Update | https://www.mdpi.com/2079-4991/7/1/13 |
| article html file updated | 22 September 2019 20:26 CEST | Update | - |
| article html file updated | 4 May 2019 15:42 CEST | Update | - |
| article html file updated | 7 February 2017 12:59 CET | Update | - |
| article html file updated | 12 January 2017 08:29 CET | Original file | - |
| article xml uploaded. | 12 January 2017 08:27 CET | Update | https://www.mdpi.com/2079-4991/7/1/13/xml |
| article xml uploaded. | 12 January 2017 08:27 CET | Original file | - |
| article pdf uploaded. | 12 January 2017 08:27 CET | Version of Record | https://www.mdpi.com/2079-4991/7/1/13/pdf |
