| article html file updated | 6 February 2020 07:25 CET | Update | https://www.mdpi.com/2071-1050/6/2/1046 |
| article html file updated | 7 May 2019 18:20 CEST | Update | - |
| article html file updated | 21 March 2019 12:43 CET | Update | - |
| article html file updated | 19 August 2015 21:19 CEST | Update | - |
| article html file updated | 24 June 2014 12:26 CEST | Original file | - |
| article xml file uploaded | 24 June 2014 12:26 CEST | Original file | https://www.mdpi.com/2071-1050/6/2/1046/xml |
| article pdf uploaded. | 21 February 2014 12:52 CET | Version of Record | https://www.mdpi.com/2071-1050/6/2/1046/pdf |
