| article html file updated | 5 February 2020 18:13 CET | Update | https://www.mdpi.com/1660-3397/9/9/1649 |
| article html file updated | 8 May 2019 22:55 CEST | Update | - |
| article html file updated | 20 March 2019 09:51 CET | Update | - |
| article html file updated | 16 June 2015 18:39 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/1660-3397/9/9/1649/xml |
| article html file updated | 6 February 2013 22:47 CET | Update | - |
| article html file updated | 6 February 2013 02:34 CET | Update | - |
| article html file updated | 28 January 2013 23:54 CET | Update | - |
| article html file updated | 26 January 2013 05:15 CET | Update | - |
| article html file updated | 22 January 2013 22:52 CET | Original file | - |
