| article html file updated | 7 February 2020 17:24 CET | Update | https://www.mdpi.com/2075-163X/6/4/117 |
| article html file updated | 22 September 2019 04:33 CEST | Update | - |
| article html file updated | 4 May 2019 23:41 CEST | Update | - |
| article html file updated | 30 December 2016 06:10 CET | Update | - |
| article html file updated | 2 November 2016 11:19 CET | Original file | - |
| article xml uploaded. | 2 November 2016 11:17 CET | Update | https://www.mdpi.com/2075-163X/6/4/117/xml |
| article xml uploaded. | 2 November 2016 11:17 CET | Update | - |
| article xml uploaded. | 2 November 2016 11:17 CET | Original file | - |
| article pdf uploaded. | 2 November 2016 11:17 CET | Version of Record | https://www.mdpi.com/2075-163X/6/4/117/pdf |
