| article html file updated | 5 February 2020 20:36 CET | Update | https://www.mdpi.com/2073-4425/3/2/320 |
| article html file updated | 8 May 2019 17:46 CEST | Update | - |
| article html file updated | 25 March 2019 11:35 CET | Update | - |
| article html file updated | 17 June 2015 00:09 CEST | Update | - |
| article html file updated | 7 February 2013 12:33 CET | Update | - |
| article html file updated | 7 February 2013 02:30 CET | Update | - |
| article html file updated | 6 February 2013 07:57 CET | Update | - |
| article html file updated | 31 January 2013 10:35 CET | Update | - |
| article xml file uploaded | 31 January 2013 10:34 CET | Original file | https://www.mdpi.com/2073-4425/3/2/320/xml |
| article html file updated | 29 January 2013 03:55 CET | Update | - |
| article html file updated | 26 January 2013 10:48 CET | Update | - |
| article html file updated | 23 January 2013 18:35 CET | Original file | - |
