| article html file updated | 5 February 2020 21:05 CET | Update | https://www.mdpi.com/2077-0375/2/3/384 |
| article html file updated | 8 May 2019 16:40 CEST | Update | - |
| article html file updated | 25 March 2019 12:37 CET | Update | - |
| article html file updated | 17 June 2015 00:55 CEST | Update | - |
| article html file updated | 18 March 2014 09:49 CET | Update | - |
| article xml file uploaded | 18 March 2014 09:49 CET | Original file | https://www.mdpi.com/2077-0375/2/3/384/xml |
| article html file updated | 7 February 2013 13:26 CET | Update | - |
| article html file updated | 7 February 2013 03:24 CET | Update | - |
| article html file updated | 6 February 2013 08:43 CET | Update | - |
| article html file updated | 29 January 2013 05:12 CET | Update | - |
| article html file updated | 26 January 2013 11:54 CET | Update | - |
| article html file updated | 23 January 2013 21:34 CET | Original file | - |
