| article html file updated | 7 February 2020 16:19 CET | Update | https://www.mdpi.com/2075-4450/7/4/54 |
| article html file updated | 22 September 2019 02:49 CEST | Update | - |
| article html file updated | 5 May 2019 01:43 CEST | Update | - |
| article html file updated | 29 December 2016 04:30 CET | Update | - |
| article html file updated | 14 October 2016 05:24 CEST | Original file | - |
| article xml uploaded. | 14 October 2016 05:23 CEST | Update | https://www.mdpi.com/2075-4450/7/4/54/xml |
| article xml uploaded. | 14 October 2016 05:23 CEST | Original file | - |
| article pdf uploaded. | 14 October 2016 05:23 CEST | Version of Record | https://www.mdpi.com/2075-4450/7/4/54/pdf |
