| article html file updated | 5 February 2020 14:36 CET | Update | https://www.mdpi.com/1660-3397/8/6/1731 |
| article html file updated | 9 May 2019 06:09 CEST | Update | - |
| article html file updated | 20 March 2019 00:40 CET | Update | - |
| article html file updated | 16 June 2015 09:59 CEST | Update | - |
| article html file updated | 14 August 2014 12:06 CEST | Update | - |
| article xml file uploaded | 14 August 2014 12:06 CEST | Original file | https://www.mdpi.com/1660-3397/8/6/1731/xml |
| article html file updated | 6 February 2013 17:42 CET | Update | - |
| article html file updated | 5 February 2013 21:49 CET | Update | - |
| article html file updated | 28 January 2013 19:21 CET | Update | - |
| article html file updated | 25 January 2013 22:26 CET | Update | - |
| article html file updated | 22 January 2013 00:31 CET | Update | - |
| article html file updated | 18 January 2013 06:43 CET | Original file | - |
