| article html file updated | 5 February 2020 23:55 CET | Update | https://www.mdpi.com/2072-6651/5/1/106 |
| article html file updated | 8 May 2019 10:00 CEST | Update | - |
| article html file updated | 20 March 2019 17:00 CET | Update | - |
| article html file updated | 17 June 2015 05:24 CEST | Update | - |
| article html file updated | 8 February 2013 09:26 CET | Update | - |
| article html file updated | 7 February 2013 17:45 CET | Update | - |
| article html file updated | 5 February 2013 12:16 CET | Update | - |
| article xml file uploaded | 5 February 2013 12:16 CET | Update | https://www.mdpi.com/2072-6651/5/1/106/xml |
| article html file updated | 24 January 2013 12:06 CET | Update | - |
| article html file updated | 17 January 2013 16:34 CET | Original file | - |
| article xml uploaded. | 17 January 2013 16:34 CET | Original file | - |
