| article html file updated | 5 February 2020 19:56 CET | Update | https://www.mdpi.com/2073-4425/3/2/248 |
| article html file updated | 8 May 2019 19:15 CEST | Update | - |
| article html file updated | 25 March 2019 10:16 CET | Update | - |
| article html file updated | 16 June 2015 22:49 CEST | Update | - |
| article html file updated | 5 March 2015 11:19 CET | Update | - |
| article xml file uploaded | 5 March 2015 11:19 CET | Update | https://www.mdpi.com/2073-4425/3/2/248/xml |
| article html file updated | 7 February 2013 11:24 CET | Update | - |
| article html file updated | 7 February 2013 01:27 CET | Update | - |
| article html file updated | 6 February 2013 06:52 CET | Update | - |
| article html file updated | 31 January 2013 10:34 CET | Update | - |
| article xml file uploaded | 31 January 2013 10:34 CET | Original file | - |
| article html file updated | 29 January 2013 02:32 CET | Update | - |
| article html file updated | 26 January 2013 09:18 CET | Update | - |
| article html file updated | 23 January 2013 13:55 CET | Original file | - |
