| article html file updated | 6 February 2020 02:17 CET | Update | https://www.mdpi.com/2071-1050/5/6/2288 |
| article html file updated | 8 May 2019 04:47 CEST | Update | - |
| article html file updated | 20 March 2019 22:57 CET | Update | - |
| article html file updated | 17 June 2015 09:38 CEST | Update | - |
| article html file updated | 14 November 2014 11:02 CET | Original file | - |
| article xml file uploaded | 14 November 2014 11:02 CET | Original file | https://www.mdpi.com/2071-1050/5/6/2288/xml |
| article pdf uploaded. | 24 May 2013 13:33 CEST | Version of Record | https://www.mdpi.com/2071-1050/5/6/2288/pdf |
