| article html file updated | 19 August 2015 20:51 CEST | Update | https://www.mdpi.com/1996-1073/7/2/874 |
| article html file updated | 3 June 2014 12:03 CEST | Original file | N/A |
| article xml file uploaded | 3 June 2014 12:03 CEST | Original file | https://www.mdpi.com/1996-1073/7/2/874/xml |
| article pdf uploaded. | 19 February 2014 13:27 CET | Version of Record | https://www.mdpi.com/1996-1073/7/2/874/pdf |
