| article html file updated | 21 August 2015 10:40 CEST | Update | https://www.mdpi.com/1996-1073/8/4/2977 |
| article html file updated | 4 May 2015 05:32 CEST | Original file | - |
| article xml file uploaded | 4 May 2015 05:32 CEST | Original file | https://www.mdpi.com/1996-1073/8/4/2977/xml |
| article pdf uploaded. | 17 April 2015 10:26 CEST | Version of Record | https://www.mdpi.com/1996-1073/8/4/2977/pdf |
