| article html file updated | 6 February 2020 10:16 CET | Update | https://www.mdpi.com/2071-1050/6/7/4042 |
| article html file updated | 7 May 2019 12:30 CEST | Update | - |
| article html file updated | 21 March 2019 19:42 CET | Update | - |
| article html file updated | 20 August 2015 11:02 CEST | Original file | - |
| article pdf uploaded. | 27 June 2014 13:41 CEST | Updated version of record | https://www.mdpi.com/2071-1050/6/7/4042/pdf |
| article pdf uploaded. | 26 June 2014 11:21 CEST | Version of Record | https://www.mdpi.com/2071-1050/6/7/4042/pdf-vor |
