| article html file updated | 5 February 2020 17:00 CET | Update | https://www.mdpi.com/1660-3397/9/4/561 |
| article html file updated | 9 May 2019 01:22 CEST | Update | - |
| article html file updated | 20 March 2019 06:49 CET | Update | - |
| article html file updated | 16 June 2015 15:23 CEST | Update | - |
| article html file updated | 14 August 2014 12:07 CEST | Update | - |
| article xml file uploaded | 14 August 2014 12:07 CEST | Update | https://www.mdpi.com/1660-3397/9/4/561/xml |
| article html file updated | 14 August 2014 12:03 CEST | Update | - |
| article xml file uploaded | 14 August 2014 12:03 CEST | Original file | - |
| article html file updated | 6 February 2013 20:37 CET | Update | - |
| article html file updated | 6 February 2013 00:29 CET | Update | - |
| article html file updated | 28 January 2013 21:56 CET | Update | - |
| article html file updated | 26 January 2013 02:00 CET | Update | - |
| article html file updated | 22 January 2013 13:57 CET | Original file | - |
