| article html file updated | 6 February 2020 13:38 CET | Update | https://www.mdpi.com/2071-1050/6/11/8092 |
| article html file updated | 7 May 2019 05:31 CEST | Update | - |
| article html file updated | 25 March 2019 17:42 CET | Update | - |
| article html file updated | 21 August 2015 02:04 CEST | Update | - |
| article html file updated | 24 November 2014 08:52 CET | Original file | - |
| article xml file uploaded | 24 November 2014 08:52 CET | Original file | https://www.mdpi.com/2071-1050/6/11/8092/xml |
| article pdf uploaded. | 18 November 2014 08:08 CET | Updated version of record | https://www.mdpi.com/2071-1050/6/11/8092/pdf |
| article pdf uploaded. | 14 November 2014 14:00 CET | Version of Record | https://www.mdpi.com/2071-1050/6/11/8092/pdf-vor |
