| article html file updated | 21 August 2015 07:14 CEST | Update | https://www.mdpi.com/1996-1944/8/2/561 |
| article html file updated | 17 March 2015 09:31 CET | Original file | N/A |
| article xml file uploaded | 17 March 2015 09:31 CET | Original file | https://www.mdpi.com/1996-1944/8/2/561/xml |
| article pdf uploaded. | 6 February 2015 11:43 CET | Version of Record | https://www.mdpi.com/1996-1944/8/2/561/pdf |
