| article html file updated | 5 February 2020 17:04 CET | Update | https://www.mdpi.com/1660-3397/9/4/615 |
| article html file updated | 9 May 2019 01:14 CEST | Update | - |
| article html file updated | 20 March 2019 07:03 CET | Update | - |
| article html file updated | 16 June 2015 15:34 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/1660-3397/9/4/615/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 20:45 CET | Update | - |
| article html file updated | 6 February 2013 00:36 CET | Update | - |
| article html file updated | 28 January 2013 22:03 CET | Update | - |
| article html file updated | 26 January 2013 02:10 CET | Update | - |
| article html file updated | 22 January 2013 14:34 CET | Original file | - |
