| article html file updated | 5 February 2020 14:50 CET | Update | https://www.mdpi.com/1660-3397/8/6/1908 |
| article html file updated | 9 May 2019 05:43 CEST | Update | N/A |
| article html file updated | 20 March 2019 01:14 CET | Update | N/A |
| article html file updated | 16 June 2015 10:22 CEST | Update | N/A |
| article html file updated | 14 August 2014 12:06 CEST | Update | N/A |
| article xml file uploaded | 14 August 2014 12:06 CEST | Original file | https://www.mdpi.com/1660-3397/8/6/1908/xml |
| article html file updated | 6 February 2013 17:53 CET | Update | N/A |
| article html file updated | 5 February 2013 22:00 CET | Update | N/A |
| article html file updated | 28 January 2013 19:31 CET | Update | N/A |
| article html file updated | 25 January 2013 22:40 CET | Update | N/A |
| article html file updated | 22 January 2013 01:17 CET | Update | N/A |
| article html file updated | 18 January 2013 07:29 CET | Original file | N/A |
