| article html file updated | 5 February 2020 22:33 CET | Update | https://www.mdpi.com/2079-6374/2/4/427 |
| article html file updated | 8 May 2019 13:23 CEST | Update | - |
| article html file updated | 20 March 2019 13:59 CET | Update | - |
| article html file updated | 17 June 2015 03:16 CEST | Update | - |
| article html file updated | 24 July 2014 10:22 CEST | Update | - |
| article xml file uploaded | 24 July 2014 10:22 CEST | Update | https://www.mdpi.com/2079-6374/2/4/427/xml |
| article html file updated | 21 July 2014 09:31 CEST | Update | - |
| article xml file uploaded | 21 July 2014 09:31 CEST | Original file | - |
| article html file updated | 7 February 2013 16:02 CET | Update | - |
| article html file updated | 24 January 2013 05:59 CET | Original file | - |
