| article html file updated | 16 June 2015 20:59 CEST | Update | https://www.mdpi.com/1424-8220/12/1/489 |
| article html file updated | 31 October 2013 10:27 CET | Update | - |
| article xml file uploaded | 31 October 2013 10:27 CET | Original file | https://www.mdpi.com/1424-8220/12/1/489/xml |
| article html file updated | 7 February 2013 09:38 CET | Update | - |
| article html file updated | 7 February 2013 00:10 CET | Update | - |
| article html file updated | 6 February 2013 05:26 CET | Update | - |
| article html file updated | 29 January 2013 01:12 CET | Update | - |
| article html file updated | 26 January 2013 07:20 CET | Update | - |
| article html file updated | 23 January 2013 07:05 CET | Original file | - |
