| article html file updated | 16 June 2015 19:32 CEST | Update | https://www.mdpi.com/1424-8247/4/11/1423 |
| article html file updated | 17 June 2014 04:43 CEST | Update | N/A |
| article xml file uploaded | 17 June 2014 04:43 CEST | Original file | https://www.mdpi.com/1424-8247/4/11/1423/xml |
| article html file updated | 6 February 2013 23:14 CET | Update | N/A |
| article html file updated | 6 February 2013 03:02 CET | Update | N/A |
| article html file updated | 29 January 2013 00:19 CET | Update | N/A |
| article html file updated | 26 January 2013 05:51 CET | Update | N/A |
| article html file updated | 23 January 2013 00:55 CET | Original file | N/A |
