| article html file updated | 21 August 2015 06:01 CEST | Update | https://www.mdpi.com/2073-8994/7/1/67 |
| article html file updated | 7 April 2015 05:36 CEST | Original file | - |
| article xml file uploaded | 7 April 2015 05:36 CEST | Original file | https://www.mdpi.com/2073-8994/7/1/67/xml |
| article pdf uploaded. | 16 January 2015 15:26 CET | Version of Record | https://www.mdpi.com/2073-8994/7/1/67/pdf |
