| article html file updated | 8 February 2020 22:19 CET | Update | https://www.mdpi.com/2227-7099/5/4/46 |
| article html file updated | 28 September 2019 18:45 CEST | Update | - |
| article html file updated | 2 May 2019 12:30 CEST | Update | - |
| article html file updated | 18 April 2019 10:07 CEST | Update | - |
| article html file updated | 2 January 2018 16:59 CET | Update | - |
| article html file updated | 27 November 2017 08:23 CET | Original file | - |
| article xml uploaded. | 27 November 2017 08:22 CET | Original file | https://www.mdpi.com/2227-7099/5/4/46/xml |
| article pdf uploaded. | 27 November 2017 08:22 CET | Version of Record | https://www.mdpi.com/2227-7099/5/4/46/pdf |
