| article html file updated | 5 February 2020 17:59 CET | Update | https://www.mdpi.com/1660-3397/9/8/1428 |
| article html file updated | 8 May 2019 23:25 CEST | Update | - |
| article html file updated | 20 March 2019 09:14 CET | Update | - |
| article html file updated | 16 June 2015 17:59 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/1660-3397/9/8/1428/xml |
| article html file updated | 6 February 2013 22:22 CET | Update | - |
| article html file updated | 6 February 2013 02:09 CET | Update | - |
| article html file updated | 28 January 2013 23:31 CET | Update | - |
| article html file updated | 26 January 2013 04:36 CET | Update | - |
| article html file updated | 22 January 2013 21:07 CET | Original file | - |
