| article html file updated | 5 February 2020 12:03 CET | Update | https://www.mdpi.com/1422-0067/10/4/1476 |
| article html file updated | 9 May 2019 11:55 CEST | Update | - |
| article html file updated | 19 March 2019 17:59 CET | Update | - |
| article html file updated | 16 June 2015 05:56 CEST | Update | - |
| article html file updated | 6 February 2013 14:52 CET | Update | - |
| article html file updated | 5 February 2013 18:50 CET | Update | - |
| article html file updated | 28 January 2013 16:40 CET | Update | - |
| article html file updated | 25 January 2013 18:32 CET | Update | - |
| article html file updated | 21 January 2013 12:59 CET | Update | - |
| article html file updated | 18 January 2013 22:04 CET | Update | - |
| article html file updated | 17 January 2013 20:23 CET | Original file | - |
| Correction published | 17 April 2009 00:00 CEST | Correction | http://www.mdpi.com/1422-0067/10/4/1728 |
