| article html file updated | 7 February 2020 19:00 CET | Update | https://www.mdpi.com/2075-163X/6/4/128 |
| article html file updated | 22 September 2019 08:28 CEST | Update | - |
| article html file updated | 4 May 2019 20:31 CEST | Update | - |
| article html file updated | 30 December 2016 06:13 CET | Update | - |
| article html file updated | 2 December 2016 11:30 CET | Original file | - |
| article xml uploaded. | 2 December 2016 11:29 CET | Original file | https://www.mdpi.com/2075-163X/6/4/128/xml |
| article pdf uploaded. | 2 December 2016 11:29 CET | Version of Record | https://www.mdpi.com/2075-163X/6/4/128/pdf |
