| article html file updated | 16 June 2015 10:33 CEST | Update | https://www.mdpi.com/1424-8220/10/7/6421 |
| article html file updated | 28 April 2014 11:12 CEST | Update | N/A |
| article xml file uploaded | 28 April 2014 11:12 CEST | Original file | https://www.mdpi.com/1424-8220/10/7/6421/xml |
| article html file updated | 6 February 2013 17:59 CET | Update | N/A |
| article html file updated | 5 February 2013 22:05 CET | Update | N/A |
| article html file updated | 28 January 2013 19:37 CET | Update | N/A |
| article html file updated | 25 January 2013 22:48 CET | Update | N/A |
| article html file updated | 22 January 2013 01:41 CET | Update | N/A |
| article html file updated | 18 January 2013 07:49 CET | Original file | N/A |
