| article html file updated | 16 June 2015 15:49 CEST | Update | https://www.mdpi.com/1424-8220/11/5/4721 |
| article html file updated | 14 August 2014 12:05 CEST | Update | N/A |
| article xml file uploaded | 14 August 2014 12:05 CEST | Original file | https://www.mdpi.com/1424-8220/11/5/4721/xml |
| article html file updated | 6 February 2013 20:53 CET | Update | N/A |
| article html file updated | 6 February 2013 00:45 CET | Update | N/A |
| article html file updated | 28 January 2013 22:11 CET | Update | N/A |
| article html file updated | 26 January 2013 02:21 CET | Update | N/A |
| article html file updated | 22 January 2013 15:16 CET | Original file | N/A |
