| article html file updated | 20 August 2015 04:08 CEST | Update | https://www.mdpi.com/1996-1073/7/4/2498 |
| article html file updated | 16 June 2014 09:21 CEST | Original file | - |
| article xml file uploaded | 16 June 2014 09:21 CEST | Original file | https://www.mdpi.com/1996-1073/7/4/2498/xml |
| article pdf uploaded. | 22 April 2014 12:05 CEST | Version of Record | https://www.mdpi.com/1996-1073/7/4/2498/pdf |
