| article html file updated | 5 February 2020 13:47 CET | Update | https://www.mdpi.com/2072-6643/2/3/319 |
| article html file updated | 9 May 2019 07:54 CEST | Update | N/A |
| article html file updated | 19 March 2019 22:41 CET | Update | N/A |
| article html file updated | 16 June 2015 08:33 CEST | Update | N/A |
| article html file updated | 6 February 2013 16:46 CET | Update | N/A |
| article html file updated | 5 February 2013 20:55 CET | Update | N/A |
| article html file updated | 28 January 2013 18:30 CET | Update | N/A |
| article html file updated | 25 January 2013 21:17 CET | Update | N/A |
| article html file updated | 21 January 2013 21:11 CET | Update | N/A |
| article html file updated | 18 January 2013 02:53 CET | Original file | N/A |
| Correction published | 13 April 2010 00:00 CEST | Correction | http://www.mdpi.com/2072-6643/2/4/481 |
