| article html file updated | 5 February 2020 18:40 CET | Update | https://www.mdpi.com/1660-3397/9/11/2469 |
| article html file updated | 8 May 2019 21:56 CEST | Update | - |
| article html file updated | 20 March 2019 10:57 CET | Update | - |
| article html file updated | 16 June 2015 20:05 CEST | Update | - |
| article html file updated | 14 August 2014 12:04 CEST | Update | - |
| article xml file uploaded | 14 August 2014 12:04 CEST | Original file | https://www.mdpi.com/1660-3397/9/11/2469/xml |
| article html file updated | 6 February 2013 23:35 CET | Update | - |
| article html file updated | 6 February 2013 04:02 CET | Update | - |
| article html file updated | 29 January 2013 00:39 CET | Update | - |
| article html file updated | 26 January 2013 06:22 CET | Update | - |
| article html file updated | 23 January 2013 02:36 CET | Original file | - |
