| article html file updated | 20 August 2015 01:39 CEST | Update | https://www.mdpi.com/1996-1944/7/4/2669 |
| article html file updated | 3 June 2014 14:52 CEST | Original file | N/A |
| article xml file uploaded | 3 June 2014 14:51 CEST | Original file | https://www.mdpi.com/1996-1944/7/4/2669/xml |
| article pdf uploaded. | 31 March 2014 09:49 CEST | Updated version of record | https://www.mdpi.com/1996-1944/7/4/2669/pdf |
