| article html file updated | 19 August 2015 16:21 CEST | Update | https://www.mdpi.com/1424-8220/14/1/691 |
| article html file updated | 20 February 2014 09:14 CET | Original file | - |
| article xml file uploaded | 20 February 2014 09:13 CET | Original file | https://www.mdpi.com/1424-8220/14/1/691/xml |
| article pdf uploaded. | 2 January 2014 11:57 CET | Version of Record | https://www.mdpi.com/1424-8220/14/1/691/pdf |
