| article html file updated | 5 February 2020 21:41 CET | Update | https://www.mdpi.com/2071-1050/4/9/1946 |
| article html file updated | 8 May 2019 15:26 CEST | Update | - |
| article html file updated | 20 March 2019 11:44 CET | Update | - |
| article html file updated | 17 June 2015 01:50 CEST | Update | - |
| article html file updated | 14 August 2014 12:06 CEST | Update | - |
| article xml file uploaded | 14 August 2014 12:06 CEST | Original file | https://www.mdpi.com/2071-1050/4/9/1946/xml |
| article html file updated | 7 February 2013 14:33 CET | Update | - |
| article html file updated | 7 February 2013 05:35 CET | Update | - |
| article html file updated | 6 February 2013 09:52 CET | Update | - |
| article html file updated | 29 January 2013 06:09 CET | Update | - |
| article html file updated | 27 January 2013 04:12 CET | Update | - |
| article html file updated | 24 January 2013 00:33 CET | Original file | - |
