| article html file updated | 16 June 2015 18:49 CEST | Update | https://www.mdpi.com/2071-1050/3/10/1637 |
| article html file updated | 14 August 2014 12:06 CEST | Update | N/A |
| article xml file uploaded | 14 August 2014 12:06 CEST | Original file | https://www.mdpi.com/2071-1050/3/10/1637/xml |
| article html file updated | 6 February 2013 22:50 CET | Update | N/A |
| article html file updated | 6 February 2013 02:37 CET | Update | N/A |
| article html file updated | 28 January 2013 23:57 CET | Update | N/A |
| article html file updated | 26 January 2013 05:19 CET | Update | N/A |
| article html file updated | 22 January 2013 23:04 CET | Original file | N/A |
