| article html file updated | 6 February 2020 04:05 CET | Update | https://www.mdpi.com/2071-1050/5/9/3702 |
| article html file updated | 8 May 2019 01:04 CEST | Update | - |
| article html file updated | 21 March 2019 03:51 CET | Update | - |
| article html file updated | 17 June 2015 12:47 CEST | Original file | - |
| article pdf uploaded. | 2 September 2013 09:50 CEST | Updated version of record | https://www.mdpi.com/2071-1050/5/9/3702/pdf |
| article pdf uploaded. | 29 August 2013 13:57 CEST | Version of Record | https://www.mdpi.com/2071-1050/5/9/3702/pdf-vor |
