| article html file updated | 6 February 2020 12:33 CET | Update | https://www.mdpi.com/2071-1050/6/10/6644 |
| article html file updated | 20 September 2019 13:23 CEST | Update | - |
| article html file updated | 7 May 2019 07:40 CEST | Update | - |
| article html file updated | 22 March 2019 01:47 CET | Update | - |
| article html file updated | 20 August 2015 21:36 CEST | Update | - |
| article html file updated | 28 October 2014 11:40 CET | Original file | - |
| article xml file uploaded | 28 October 2014 11:40 CET | Original file | https://www.mdpi.com/2071-1050/6/10/6644/xml |
| article pdf uploaded. | 29 September 2014 12:06 CEST | Version of Record | https://www.mdpi.com/2071-1050/6/10/6644/pdf |
