| article html file updated | 5 February 2020 22:52 CET | Update | https://www.mdpi.com/2079-6374/2/4/448 |
| article html file updated | 8 May 2019 12:30 CEST | Update | - |
| article html file updated | 20 March 2019 14:42 CET | Update | - |
| article html file updated | 17 June 2015 03:51 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/2079-6374/2/4/448/xml |
| article html file updated | 21 July 2014 09:32 CEST | Update | - |
| article xml file uploaded | 21 July 2014 09:31 CEST | Original file | - |
| article html file updated | 7 February 2013 16:36 CET | Update | - |
| article html file updated | 24 January 2013 07:56 CET | Original file | - |
