| article html file updated | 5 February 2020 23:18 CET | Update | https://www.mdpi.com/1660-4601/9/12/4504 |
| article html file updated | 8 May 2019 11:22 CEST | Update | - |
| article html file updated | 20 March 2019 15:40 CET | Update | - |
| article html file updated | 17 June 2015 04:38 CEST | Update | - |
| article html file updated | 7 February 2013 17:16 CET | Update | - |
| article html file updated | 29 January 2013 15:49 CET | Update | - |
| article xml file uploaded | 29 January 2013 15:49 CET | Original file | https://www.mdpi.com/1660-4601/9/12/4504/xml |
| article html file updated | 24 January 2013 10:34 CET | Original file | - |
