| article html file updated | 19 August 2015 18:23 CEST | Update | https://www.mdpi.com/1996-1073/7/1/420 |
| article html file updated | 3 June 2014 11:53 CEST | Original file | N/A |
| article xml file uploaded | 3 June 2014 11:53 CEST | Original file | https://www.mdpi.com/1996-1073/7/1/420/xml |
| article pdf uploaded. | 22 January 2014 11:48 CET | Version of Record | https://www.mdpi.com/1996-1073/7/1/420/pdf |
