| article html file updated | 20 August 2015 01:18 CEST | Update | https://www.mdpi.com/1996-1073/7/4/1917 |
| article html file updated | 16 June 2014 09:24 CEST | Original file | - |
| article xml file uploaded | 16 June 2014 09:24 CEST | Original file | https://www.mdpi.com/1996-1073/7/4/1917/xml |
| article pdf uploaded. | 27 March 2014 10:33 CET | Version of Record | https://www.mdpi.com/1996-1073/7/4/1917/pdf |
