| article html file updated | 5 February 2020 17:32 CET | Update | https://www.mdpi.com/1660-3397/9/6/1157 |
| article html file updated | 9 May 2019 00:18 CEST | Update | - |
| article html file updated | 20 March 2019 08:08 CET | Update | - |
| article html file updated | 16 June 2015 16:52 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/1660-3397/9/6/1157/xml |
| article html file updated | 6 February 2013 21:33 CET | Update | - |
| article html file updated | 6 February 2013 01:25 CET | Update | - |
| article html file updated | 28 January 2013 22:49 CET | Update | - |
| article html file updated | 26 January 2013 03:13 CET | Update | - |
| article html file updated | 22 January 2013 18:04 CET | Original file | - |
