| article html file updated | 6 February 2020 03:57 CET | Update | https://www.mdpi.com/2071-1050/5/9/3615 |
| article html file updated | 20 September 2019 00:21 CEST | Update | - |
| article html file updated | 8 May 2019 01:22 CEST | Update | - |
| article html file updated | 21 March 2019 03:27 CET | Update | - |
| article html file updated | 17 June 2015 12:35 CEST | Original file | - |
| article pdf uploaded. | 23 August 2013 09:45 CEST | Updated version of record | https://www.mdpi.com/2071-1050/5/9/3615/pdf |
| article pdf uploaded. | 22 August 2013 12:15 CEST | Version of Record | https://www.mdpi.com/2071-1050/5/9/3615/pdf-vor |
