| article html file updated | 5 February 2020 16:27 CET | Update | https://www.mdpi.com/1660-3397/9/1/109 |
| article html file updated | 9 May 2019 02:27 CEST | Update | - |
| article html file updated | 20 March 2019 05:20 CET | Update | - |
| article html file updated | 16 June 2015 13:51 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/1660-3397/9/1/109/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 19:39 CET | Update | - |
| article html file updated | 5 February 2013 23:34 CET | Update | - |
| article html file updated | 28 January 2013 21:05 CET | Update | - |
| article html file updated | 26 January 2013 00:47 CET | Update | - |
| article html file updated | 22 January 2013 09:20 CET | Original file | - |
