| article html file updated | 8 February 2020 21:45 CET | Update | https://www.mdpi.com/2077-0375/7/4/65 |
| article html file updated | 28 September 2019 15:13 CEST | Update | - |
| article html file updated | 2 May 2019 13:44 CEST | Update | - |
| article html file updated | 18 April 2019 11:23 CEST | Update | - |
| article html file updated | 2 January 2018 20:22 CET | Update | - |
| article html file updated | 21 November 2017 09:58 CET | Original file | - |
| article xml uploaded. | 21 November 2017 09:57 CET | Update | https://www.mdpi.com/2077-0375/7/4/65/xml |
| article xml uploaded. | 21 November 2017 09:57 CET | Original file | - |
| article pdf uploaded. | 21 November 2017 09:57 CET | Version of Record | https://www.mdpi.com/2077-0375/7/4/65/pdf |
