| article html file updated | 19 August 2015 21:29 CEST | Update | https://www.mdpi.com/1996-1073/7/2/972 |
| article html file updated | 3 June 2014 12:02 CEST | Original file | - |
| article xml file uploaded | 3 June 2014 12:02 CEST | Original file | https://www.mdpi.com/1996-1073/7/2/972/xml |
| article pdf uploaded. | 24 February 2014 11:02 CET | Version of Record | https://www.mdpi.com/1996-1073/7/2/972/pdf |
