| article html file updated | 5 February 2020 20:52 CET | Update | https://www.mdpi.com/1999-4907/3/2/398 |
| article html file updated | 8 May 2019 17:12 CEST | Update | - |
| article html file updated | 25 March 2019 12:09 CET | Update | - |
| article html file updated | 17 June 2015 00:32 CEST | Update | - |
| article supplementary file uploaded. | 21 June 2013 14:45 CEST | - | https://www.mdpi.com/1999-4907/3/2/398#supplementary |
| Correction published | 21 June 2013 00:00 CEST | Correction | http://www.mdpi.com/1999-4907/4/2/517 |
| article html file updated | 7 February 2013 13:00 CET | Update | - |
| article html file updated | 7 February 2013 02:52 CET | Update | - |
| article html file updated | 6 February 2013 08:21 CET | Update | - |
| article html file updated | 29 January 2013 04:45 CET | Update | - |
| article html file updated | 26 January 2013 11:21 CET | Update | - |
| article html file updated | 23 January 2013 20:13 CET | Original file | - |
