| article html file updated | 19 August 2015 15:50 CEST | Update | https://www.mdpi.com/1996-1073/7/1/62 |
| article html file updated | 3 June 2014 11:55 CEST | Original file | - |
| article xml file uploaded | 3 June 2014 11:55 CEST | Original file | https://www.mdpi.com/1996-1073/7/1/62/xml |
| article pdf uploaded. | 30 December 2013 11:50 CET | Version of Record | https://www.mdpi.com/1996-1073/7/1/62/pdf |
