| article html file updated | 5 February 2020 18:24 CET | Update | https://www.mdpi.com/2077-0375/1/4/314 |
| article html file updated | 8 May 2019 22:32 CEST | Update | N/A |
| article html file updated | 20 March 2019 10:19 CET | Update | N/A |
| article html file updated | 16 June 2015 19:21 CEST | Update | N/A |
| article html file updated | 14 August 2014 12:04 CEST | Update | N/A |
| article xml file uploaded | 14 August 2014 12:04 CEST | Update | https://www.mdpi.com/2077-0375/1/4/314/xml |
| article html file updated | 12 May 2014 15:42 CEST | Update | N/A |
| article xml file uploaded | 12 May 2014 15:42 CEST | Original file | N/A |
| article html file updated | 6 February 2013 23:08 CET | Update | N/A |
| article html file updated | 6 February 2013 02:55 CET | Update | N/A |
| article html file updated | 29 January 2013 00:14 CET | Update | N/A |
| article html file updated | 26 January 2013 05:43 CET | Update | N/A |
| article html file updated | 23 January 2013 00:27 CET | Original file | N/A |
| Correction published | 2 May 2012 00:00 CEST | Correction | http://www.mdpi.com/2077-0375/2/2/214 |
