| article html file updated | 21 August 2015 04:33 CEST | Update | https://www.mdpi.com/1996-1073/7/12/8554 |
| article html file updated | 31 December 2014 03:22 CET | Original file | - |
| article xml file uploaded | 31 December 2014 03:22 CET | Original file | https://www.mdpi.com/1996-1073/7/12/8554/xml |
| article pdf uploaded. | 22 December 2014 09:34 CET | Version of Record | https://www.mdpi.com/1996-1073/7/12/8554/pdf |
