| article html file updated | 6 February 2020 11:37 CET | Update | https://www.mdpi.com/2071-1050/6/8/5439 |
| article html file updated | 7 May 2019 09:25 CEST | Update | - |
| article html file updated | 21 March 2019 23:26 CET | Update | - |
| article html file updated | 20 August 2015 15:59 CEST | Original file | - |
| article pdf uploaded. | 20 August 2014 11:20 CEST | Version of Record | https://www.mdpi.com/2071-1050/6/8/5439/pdf |
